chore: updated to Angular v12

Author: AndrewJBateman

angular.json

@@ -17,7 +17,6 @@
         "build": {
           "builder": "@angular-devkit/build-angular:browser",
           "options": {
-            "aot": true,
             "outputPath": "dist/angular-observables",
             "index": "src/index.html",
             "main": "src/main.ts",
@@ -30,7 +29,13 @@
             "styles": [
               "src/styles.sass"
             ],
-            "scripts": []
+            "scripts": [],
+            "vendorChunk": true,
+            "extractLicenses": false,
+            "buildOptimizer": false,
+            "sourceMap": true,
+            "optimization": false,
+            "namedChunks": true
           },
           "configurations": {
             "production": {
@@ -45,7 +50,6 @@
               "sourceMap": false,
               "extractCss": true,
               "namedChunks": false,
-              "aot": true,
               "extractLicenses": true,
               "vendorChunk": false,
               "buildOptimizer": true,