Tested all functionality. There is a [pre-existing
bug](https://github.com/go-gitea/gitea/issues/29853) when moving a
project panels which is not caused by this refactoring.
---------
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
(cherry picked from commit fa100618c4b644346bf5666f92d33dce0747d0a2)
- Replace all default exports with named exports, except for Vue SFCs
- Remove names from Vue SFCs, they are automatically inferred from the
filename
- Misc whitespace-related tweaks