chore: configure project wide linter (#577)

* chore(lint): configure project-wide linter

* chore(lint): improve linting in files

* chore(lint): hide warnings in CI

apps/client/src/declarations/declaration.d.ts

@@ -13,9 +13,8 @@ declare global {
     };
     process: {
       type: string;
-    }
+    };
   }
 }
 
-// eslint-disable-next-line import/no-anonymous-default-export
-export default {}
+export default {};

apps/client/src/declarations/test.d.ts

@@ -6,6 +6,6 @@ import 'vitest';
 // https://github.com/testing-library/jest-dom/issues/123
 declare global {
   namespace Vi {
-    interface Assertion<T = any> extends TestingLibraryMatchers<T, void> {}
+    type Assertion<T = any> = TestingLibraryMatchers<T, void>;
   }
 }