convert Fluent's uint8 type to postgres char (#132)

Author: tanner0101

Sources/FluentPostgresDriver/PostgresConverterDelegate.swift

@@ -3,6 +3,8 @@ import FluentSQL
 struct PostgresConverterDelegate: SQLConverterDelegate {
     func customDataType(_ dataType: DatabaseSchema.DataType) -> SQLExpression? {
         switch dataType {
+        case .uint8:
+            return SQLRaw(#""char""#)
         case .uuid:
             return SQLRaw("UUID")
         case .bool:

Tests/FluentPostgresDriverTests/FluentPostgresDriverTests.swift

@@ -167,6 +167,14 @@ final class FluentPostgresDriverTests: XCTestCase {
     func testDuplicatedUniquePropertyName() throws {
         try self.benchmarker.testDuplicatedUniquePropertyName()
     }
+    
+    func testEmptyEagerLoadChildren() throws {
+        try self.benchmarker.testEmptyEagerLoadChildren()
+    }
+    
+    func testUInt8BackedEnum() throws {
+        try self.benchmarker.testUInt8BackedEnum()
+    }
 
     func testBlob() throws {
         final class Foo: Model {