feat: batch processing for recommendations & sort by relevancy (#1383)

* refactor: use NoResultsException

* refactor: cleanup RecommendationPagingSources

* refactor: turn wake/wifi lock functions into reusable extensions

* feat: implement batch recommendation (initial version)

* fix: serialization issues

* fix: wrong source id

* refactor: increase performance using virtual paging

* refactor: update string

* refactor: handle 404 of MD source correctly

* style: add newline

* refactor: create universal throttle manager

* refactor: throttle requests

* chore: remove unused strings

* feat: rank recommendations by match count

* feat: add badges indicating match count to batch recommendations

* fix: handle rec search with no results

* fix: validate flags in pre-search bottom sheet

* feat: implement 'hide library entries' for recommendation search using custom SmartSearchEngine for library items

* style: run spotless

* fix: cancel button

* fix: racing condition causing loss of state

domain/src/main/java/tachiyomi/domain/UnsortedPreferences.kt

@@ -25,6 +25,8 @@ class UnsortedPreferences(
 
     fun showOnlyUpdatesMigration() = preferenceStore.getBoolean("show_only_updates_migration", false)
 
+    fun recommendationSearchFlags() = preferenceStore.getInt("rec_search_flags", Int.MAX_VALUE)
+
     fun isHentaiEnabled() = preferenceStore.getBoolean("eh_is_hentai_enabled", true)
 
     fun enableExhentai() = preferenceStore.getBoolean(Preference.privateKey("enable_exhentai"), false)