chore: Update ESLint config and fix linting issues

Author: vrknetha

.eslintrc.json

@@ -12,11 +12,21 @@
   },
   "parserOptions": {
     "ecmaVersion": 2022,
-    "sourceType": "module"
+    "sourceType": "module",
+    "project": "./tsconfig.json"
   },
   "rules": {
     "@typescript-eslint/explicit-function-return-type": "off",
-    "@typescript-eslint/no-explicit-any": "warn",
+    "@typescript-eslint/no-explicit-any": "off",
     "@typescript-eslint/no-unused-vars": ["error", { "argsIgnorePattern": "^_" }]
-  }
+  },
+  "overrides": [
+    {
+      "files": ["**/*.test.ts"],
+      "rules": {
+        "@typescript-eslint/no-unused-vars": "off",
+        "@typescript-eslint/no-explicit-any": "off"
+      }
+    }
+  ]
 }