Use custom QueryPagingSource (#7321)

* Use custom QueryPagingSource

- Adds placeholder to make the list jump around less
- Fixes issue where SQLDelight QueryPagingSource would throw IndexOutOfBounds

* Review Changes

app/src/main/java/eu/kanade/data/DatabaseHandler.kt

@@ -2,7 +2,6 @@ package eu.kanade.data
 
 import androidx.paging.PagingSource
 import com.squareup.sqldelight.Query
-import com.squareup.sqldelight.Transacter
 import eu.kanade.tachiyomi.Database
 import kotlinx.coroutines.flow.Flow
 
@@ -33,7 +32,6 @@ interface DatabaseHandler {
 
     fun <T : Any> subscribeToPagingSource(
         countQuery: Database.() -> Query<Long>,
-        transacter: Database.() -> Transacter,
         queryProvider: Database.(Long, Long) -> Query<T>,
     ): PagingSource<Long, T>
 }