Chore: Upgraded to angular 15

Chore: Moved from angular/flex-layout to Tailwind
Chore: Upgrade completed

overlord/tsconfig.json

@@ -14,12 +14,13 @@
     "experimentalDecorators": true,
     "moduleResolution": "node",
     "importHelpers": true,
-    "target": "es2020",
+    "target": "ES2022",
     "module": "es2020",
     "lib": [
       "es2018",
       "dom"
-    ]
+    ],
+    "useDefineForClassFields": false
   },
   "angularCompilerOptions": {
     "enableI18nLegacyMessageIdFormat": false,