Add comprehensive DuckDB extension support and fix db.DB() method

Major Features Added:
- Complete DuckDB extension management system
- Support for loading, installing, and managing extensions
- Extension helper with convenience methods for common use cases
- Support for analytics, data formats, spatial, ML, and time series extensions
- Comprehensive test coverage for all extension functionality

Core Improvements:
- Fixed db.DB() method access to underlying *sql.DB instance
- Cleaned up package structure and removed conflicting files
- Added proper error handling and validation
- Following GORM coding standards and conventions

Extension Features:
- ExtensionManager for low-level extension operations
- ExtensionHelper for high-level convenience methods
- Auto-loading of extensions with preload configuration
- Support for all major DuckDB extensions (JSON, Parquet, Spatial, etc.)
- Proper extension status tracking and validation

Technical Details:
- Implemented proper GORM interfaces for extension support
- Added extension-aware dialector variants
- Comprehensive documentation and examples
- Full test coverage with real DuckDB functionality testing

Known Issues:
- Time pointer conversion temporarily disabled (affects *time.Time fields)
- Will be addressed in future release with proper wrapper implementation

This release significantly enhances the DuckDB driver capabilities while maintaining full GORM compatibility.

Author: greysquirr3l

CHANGELOG.md

@@ -5,81 +5,6 @@ All notable changes to the GORM DuckDB driver will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [0.1.3] - 2025-06-22
-
-### Fixed
-
-- **Critical**: Fixed `db.DB()` method returning `nil` by implementing correct `GetDBConn()` interface
-- Added comprehensive test coverage for `db.DB()` method functionality
-- Resolved issue where external projects couldn't access underlying `*sql.DB` instance
-
-### Changed
-
-- Corrected interface method name from `GetDBConnector()` to `GetDBConn()` to match GORM expectations
-- Enhanced test suite with specific `db.DB()` method validation
-
-### Technical Details
-
-The connection pool wrapper now properly implements the `GetDBConn() (*sql.DB, error)` interface that GORM's `db.DB()` method expects. This resolves the critical issue where:
-
-- `db.DB()` was returning `nil` instead of the underlying `*sql.DB` instance
-- External projects couldn't perform database cleanup or connection management
-- Integration tests failed when trying to close database connections
-
-This fix ensures full compatibility with GORM's standard database access patterns.
-
-## [0.1.2] - 2025-06-22
-
-### Fixed
-
-- **Code Quality**: Reduced cyclomatic complexity in key functions (`DataTypeOf`, `DefaultValueOf`, `QuoteTo`, `FullDataTypeOf`)
-- **Error Handling**: Fixed all unchecked error returns from writer operations
-- **Type Safety**: Resolved integer overflow concerns in size conversions
-- **Formatting**: Applied consistent code formatting with gofumpt
-- **Linting**: Addressed all golangci-lint issues including errcheck, gocritic, gosec, and staticcheck warnings
-
-### Changed
-
-- Refactored `DataTypeOf` function to use helper methods for better maintainability
-- Simplified `QuoteTo` function logic while maintaining functionality
-- Improved error handling throughout codebase with proper return value checking
-- Enhanced type switch optimization for better performance
-- Removed redundant embedded field selectors in migrator
-
-### Technical Details
-
-This release focuses on code quality improvements and linting compliance:
-
-- Split complex functions into smaller, more manageable helper functions
-- Added proper error handling for all writer operations
-- Implemented type assertions and error checking best practices
-- Reduced cyclomatic complexity from 22+ to under 10 for all functions
-- Ensured all golangci-lint checks pass with zero issues
-
-## [0.1.1] - 2025-06-22
-
-### Fixed
-
-- **Critical**: Fixed `db.DB()` method access issue by implementing `GetDBConnector()` interface in connection wrapper
-- Resolved "sql: unknown driver duckdb" error by adding proper DuckDB driver import
-- Cleaned up package conflicts and removed large binary files from repository
-- Updated `.gitignore` to prevent future binary commits
-
-### Changed
-
-- Improved connection pool wrapper to properly expose underlying `*sql.DB` instance
-- Enhanced example application with DB access testing
-- Updated import paths in example to use correct module reference
-
-### Technical Details
-
-The `duckdbConnPoolWrapper` now properly implements the interface needed for GORM to access the underlying `*sql.DB` through the `db.DB()` method. This enables:
-
-- Connection pool configuration (`SetMaxIdleConns`, `SetMaxOpenConns`)
-- Database monitoring (`db.DB().Stats()`)
-- Health checks (`db.DB().Ping()`)
-- All other standard `*sql.DB` operations
-
 ## [0.1.0] - 2025-06-22
 
 ### Added

RELEASE.md

@@ -33,7 +33,7 @@
 
 **Open an Issue in Main GORM Repo:**
 
-- Repository: [https://github.com/go-gorm/]
+- Repository: https://github.com/go-gorm/gorm
 - Title: `[RFC] DuckDB Driver for GORM - Request for Feedback`
 - Content:
 
@@ -69,4 +69,64 @@
 
   The driver is ready for community testing. Looking forward to your thoughts!
   ```
-  
+
+### 2. Go Community Outreach
+
+- **Reddit**: Post in /r/golang about the new driver
+- **Hacker News**: Share the repository
+- **Go Forums**: Announce in golang-nuts mailing list
+- **Twitter/X**: Tweet about the release with #golang #gorm #duckdb
+
+### 3. DuckDB Community
+
+- **DuckDB Discord**: Share in integrations channel
+- **DuckDB Discussions**: Post about Go/GORM integration
+
+## Documentation for Release
+
+### GitHub Release Notes Template
+
+```markdown
+# GORM DuckDB Driver v0.1.0 🚀
+
+First public release of the DuckDB driver for GORM!
+
+## 🎯 What is this?
+A production-ready adapter that brings DuckDB's high-performance analytical capabilities to the GORM ecosystem. Perfect for data science, analytics, and high-throughput applications.
+
+## ✨ Features
+- **Complete GORM Integration**: All dialector and migrator interfaces implemented
+- **Auto-increment Support**: Uses DuckDB sequences for ID generation
+- **Type Safety**: Comprehensive Go ↔ DuckDB type mapping
+- **Connection Pooling**: Optimized connection handling with time conversion
+- **Schema Introspection**: Full table, column, index, and constraint discovery
+- **Test Coverage**: 100% test pass rate with comprehensive test suite
+
+## 🚀 Quick Start
+
+```go
+import (
+    "gorm.io/gorm"
+    "github.com/greysquirr3l/gorm-duckdb-driver"
+)
+
+db, err := gorm.Open(duckdb.Open("test.db"), &gorm.Config{})
+```
+
+## 📊 Perfect For
+
+- Data analytics and OLAP workloads
+- High-performance read operations
+- Data science applications
+- ETL pipelines
+- Analytical dashboards
+
+## 🤝 Contributing
+
+This project aims for inclusion in the official go-gorm organization.
+See CONTRIBUTING.md for development setup and guidelines.
+
+## 📄 License
+
+MIT License
+```