add ui e2e test

[depapp]

hi @sozonome

wdyt about implementing https://playwright.dev/ (ui e2e integration test) into this awesome project?

reference : https://nextjs.org/docs/testing#playwright

[agustinusnathaniel]

Hi @depapp ! 👋

Nice idea! Sorry I just opened this discussion thread

Just added the e2e test through this PR: #106

Open for suggestions though, just share your ideas / thoughts / PRs 🙇