chore: upgrade to v15

- remove codelyzer package

- remove lint NPM script & tslint.json

- upgrade tsconfig.json#target to ES2022

Author: shanmukhateja

demo/angular.json

@@ -15,7 +15,9 @@
             "index": "src/index.html",
             "main": "src/main.ts",
             "tsConfig": "src/tsconfig.app.json",
-            "polyfills": "src/polyfills.ts",
+            "polyfills": [
+              "zone.js"
+            ],
             "assets": [
               "src/assets",
               "src/archives",
@@ -103,9 +105,11 @@
         "test": {
           "builder": "@angular-devkit/build-angular:karma",
           "options": {
-            "main": "src/test.ts",
             "karmaConfig": "./karma.conf.js",
-            "polyfills": "src/polyfills.ts",
+            "polyfills": [
+              "zone.js",
+              "zone.js/testing"
+            ],
             "tsConfig": "src/tsconfig.spec.json",
             "scripts": [
               "node_modules/jquery/dist/jquery.js",
@@ -135,6 +139,9 @@
               "src/archives",
               "src/data",
               "src/favicon.png"
+            ],
+            "include": [
+              "**/*.spec.ts"
             ]
           }
         }