add linter

ISSUE: CLDSRVCLT-2

Author: SylvainSenechal

.eslintrc.js

@@ -0,0 +1,26 @@
+module.exports = {
+  parser: '@typescript-eslint/parser',
+  extends: [
+    'eslint:recommended',
+    'plugin:@typescript-eslint/recommended',
+  ],
+  parserOptions: {
+    ecmaVersion: 2020,
+    sourceType: 'module',
+  },
+  env: {
+    node: true,
+    es6: true,
+    jest: true,
+  },
+  ignorePatterns: [
+    'node_modules/',
+    'build/',
+    'dist/',
+    '*.js',
+  ],
+  rules: {
+    '@typescript-eslint/no-explicit-any': 'warn',
+    '@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
+  },
+};

package.json

@@ -17,13 +17,18 @@
     "build:generated": "cd build/smithy/source/typescript-codegen && yarn install && yarn build",
     "build:wrapper": "tsc",
     "build": "yarn install && yarn clean:build && yarn build:smithy && yarn build:generated && yarn build:wrapper",
-    "test": "jest"
+    "test": "jest",
+    "lint": "eslint . --ext .ts,.tsx",
+    "typecheck": "tsc --noEmit"
   },
   "devDependencies": {
     "typescript": "^5.7.3",
     "@types/jest": "^30.0.0",
     "jest": "^30.2.0",
-    "ts-jest": "^29.4.4"
+    "ts-jest": "^29.4.4",
+    "eslint": "^8.57.0",
+    "@typescript-eslint/eslint-plugin": "^6.21.0",
+    "@typescript-eslint/parser": "^6.21.0"
   },
   "dependencies": {
     "fast-xml-parser": "^4.3.2",