chore: replace webpack for esbuild

[wesleimp]

Changes

Below you'll find a checklist. For each item on the list, check one option and delete the other.

Tests

• [x] This PR does not require tests

Changelog

• [x] This PR does not make a user-facing change

Documentation

• [x] This change does not need a documentation update

Dark mode

• [x] The UI has been tested both in dark and light mode