Migrate to AndroidX (#2424)

* Migrate to AndroidX (automatic conversion by Android Studio)

* AndroidX dependency code updates

* Fix source preference reparenting

* fixes the androidx prefererences icon spacing issue

(cherry picked from commit b76a15d960ec2cdf771be16377db0348b66b3179)

* Fix source preference screen heading size/list padding

Co-authored-by: Carlos <cargo8005@gmail.com>

app/src/main/java/eu/kanade/tachiyomi/data/database/DatabaseHelper.kt

@@ -1,6 +1,6 @@
 package eu.kanade.tachiyomi.data.database
 
-import android.arch.persistence.db.SupportSQLiteOpenHelper
+import androidx.sqlite.db.SupportSQLiteOpenHelper
 import android.content.Context
 import com.pushtorefresh.storio.sqlite.impl.DefaultStorIOSQLite
 import eu.kanade.tachiyomi.data.database.mappers.*

app/src/main/java/eu/kanade/tachiyomi/data/database/DbOpenCallback.kt

@@ -1,7 +1,7 @@
 package eu.kanade.tachiyomi.data.database
 
-import android.arch.persistence.db.SupportSQLiteDatabase
-import android.arch.persistence.db.SupportSQLiteOpenHelper
+import androidx.sqlite.db.SupportSQLiteDatabase
+import androidx.sqlite.db.SupportSQLiteOpenHelper
 import android.content.Context
 import android.database.sqlite.SQLiteDatabase
 import android.database.sqlite.SQLiteOpenHelper

app/src/main/java/eu/kanade/tachiyomi/data/database/resolvers/HistoryLastReadPutResolver.kt

@@ -1,7 +1,7 @@
 package eu.kanade.tachiyomi.data.database.resolvers
 
 import android.content.ContentValues
-import android.support.annotation.NonNull
+import androidx.annotation.NonNull
 import com.pushtorefresh.storio.sqlite.StorIOSQLite
 import com.pushtorefresh.storio.sqlite.operations.put.PutResult
 import com.pushtorefresh.storio.sqlite.queries.Query