refactor: update import paths for better readability

frontend/tsconfig.json

@@ -3,6 +3,13 @@
 {
   "compileOnSave": false,
   "compilerOptions": {
+    "baseUrl": "./src",
+    "paths": {
+      "@service/*": ["app/service/*"]
+      "@environments/*": ["environments/*"]
+      "@shared/*": ["app/shared/*"]
+      "@blackjack/*": ["app/feature/game/blackjack/*"]
+    },
     "outDir": "./dist/out-tsc",
     "strict": true,
     "noImplicitOverride": true,