chore: add eslint and cleanup (#118)

* refactor: modified existing react imports to conform with the recommended approach of not using the default export directly, since it will be deprecated in one of the future releases. see https://reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html for more info. note: react types don't require importing of react.
refactor: cleaned up some of the imports

* feat: added eslint and fixed all the errors/warning. eslint can now be invoked by running "npm run lint".
chore: updated .gitignore not to include unnecessary artefacts.
refactor: re-organized some of the imports.

* refactor: converted remaining few typed functional components to proper prop argument structure.

* fix: fixed small react-query invalidation bug for the FilterDetails component.

Co-authored-by: anonymous <anonymous>

web/src/App.tsx

@@ -39,4 +39,4 @@ export function App() {
             ) : null}
         </QueryClientProvider>
     )
-};
+}