feat: Add ESLint and Prettier configuration files with necessary scripts in package.json

.prettierrc

@@ -0,0 +1,7 @@
+{
+  "semi": true,
+  "singleQuote": true,
+  "trailingComma": "all",
+  "printWidth": 100,
+  "tabWidth": 2
+}

eslint.config.mjs

@@ -0,0 +1,16 @@
+import eslint from '@eslint/js';
+import tseslint from 'typescript-eslint';
+import prettierConfig from 'eslint-config-prettier';
+
+export default tseslint.config(
+  { ignores: ['dist/**', 'node_modules/**'] },
+  eslint.configs.recommended,
+  ...tseslint.configs.recommended,
+  prettierConfig,
+  {
+    rules: {
+      '@typescript-eslint/no-explicit-any': 'warn',
+      '@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
+    },
+  },
+);

package.json

@@ -7,6 +7,9 @@
     "start": "node dist/main",
     "start:dev": "nest start --watch",
     "start:debug": "nest start --debug --watch",
+    "lint": "eslint \"{src,test}/**/*.ts\"",
+    "lint:fix": "eslint \"{src,test}/**/*.ts\" --fix",
+    "format": "prettier --write \"src/**/*.ts\"",
     "test": "vitest run",
     "test:watch": "vitest",
     "test:cov": "vitest run --coverage"
@@ -29,6 +32,7 @@
     "rxjs": "^7.8.1"
   },
   "devDependencies": {
+    "@eslint/js": "^9.0.0",
     "@nestjs/cli": "^11.0.0",
     "@nestjs/testing": "^11.0.0",
     "@swc/core": "^1.10.0",
@@ -37,10 +41,14 @@
     "@types/node": "^22.0.0",
     "@types/passport-jwt": "^4.0.1",
     "@vitest/coverage-v8": "^3.0.0",
+    "eslint": "^9.0.0",
+    "eslint-config-prettier": "^10.0.0",
+    "prettier": "^3.0.0",
     "prisma": "^6.0.0",
     "ts-node": "^10.9.2",
     "tsconfig-paths": "^4.2.0",
     "typescript": "^5.7.0",
+    "typescript-eslint": "^8.0.0",
     "unplugin-swc": "^1.5.0",
     "vitest": "^3.0.0"
   }