lucf15

@ajans here is an implementation based on [LimitOffsetPagingSource](https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:room/room-paging-rxjava3/src/main/java/androidx/room/paging/rxjava3/LimitOffsetRxPagingSource.kt) by `androidx` which uses ObjectBox: ```kotlin import androidx.paging.PagingSource import androidx.paging.PagingState import io.objectbox.BoxStore import io.objectbox.kotlin.awaitCallInTx import io.objectbox.query.Query import io.objectbox.reactive.DataObserver import java.util.concurrent.atomic.AtomicBoolean import java.util.concurrent.atomic.AtomicLong...