Add ESLint integration and Angular linting support

Configured ESLint for the project with Angular and TypeScript support. Added angular-eslint dependencies, updated angular.json to include linting, and created eslint.config.js for lint rules. Updated package.json and package-lock.json with new dev dependencies.

angular.json

@@ -3,7 +3,10 @@
   "version": 1,
   "cli": {
     "packageManager": "npm",
-    "analytics": false
+    "analytics": false,
+    "schematicCollections": [
+      "angular-eslint"
+    ]
   },
   "newProjectRoot": "projects",
   "projects": {
@@ -95,6 +98,15 @@
               "src/styles.scss"
             ]
           }
+        },
+        "lint": {
+          "builder": "@angular-eslint/builder:lint",
+          "options": {
+            "lintFilePatterns": [
+              "src/**/*.ts",
+              "src/**/*.html"
+            ]
+          }
         }
       }
     }