* new multisrc theme: A3MangaTheme
* move NgonPhong into A3MangaTheme
* fix: ignore scanlation groups from search result
* chore: fix lint issues
* rename A3MangaTheme to A3Manga, resolve a bunch of suggestions
* fix: remove references of theme in the configuration
* fix: change the activity name in manifest
* fix: final newline
* chore: remove gradle file (not used)
* fix: rename ngonphong icons
* chore: add ocumeo icons
