Convert source modules to Kotlin Multiplatform (#9172)

Use KMP in source modules 


Use KMP in source-api


Expect LocalSource

source-api/src/androidMain/kotlin/eu/kanade/tachiyomi/source/PreferenceScreen.kt

@@ -0,0 +1,3 @@
+package eu.kanade.tachiyomi.source
+
+actual typealias PreferenceScreen = androidx.preference.PreferenceScreen

source-api/src/androidMain/kotlin/eu/kanade/tachiyomi/util/RxExtension.kt

@@ -0,0 +1,6 @@
+package eu.kanade.tachiyomi.util
+
+import rx.Observable
+import tachiyomi.core.util.lang.awaitSingle
+
+actual suspend fun <T> Observable<T>.awaitSingle(): T = awaitSingle()

source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/ConfigurableSource.kt

@@ -1,7 +1,5 @@
 package eu.kanade.tachiyomi.source
 
-import androidx.preference.PreferenceScreen
-
 interface ConfigurableSource : Source {
 
     fun setupPreferenceScreen(screen: PreferenceScreen)

source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/PreferenceScreen.kt

@@ -0,0 +1,3 @@
+package eu.kanade.tachiyomi.source
+
+expect class PreferenceScreen

source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/source/Source.kt

@@ -3,8 +3,8 @@ package eu.kanade.tachiyomi.source
 import eu.kanade.tachiyomi.source.model.Page
 import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
+import eu.kanade.tachiyomi.util.awaitSingle
 import rx.Observable
-import tachiyomi.core.util.lang.awaitSingle
 
 /**
  * A basic interface for creating a source. It could be an online source, a local source, etc...

source-api/src/commonMain/kotlin/eu/kanade/tachiyomi/util/RxExtension.kt

@@ -0,0 +1,5 @@
+package eu.kanade.tachiyomi.util
+
+import rx.Observable
+
+expect suspend fun <T> Observable<T>.awaitSingle(): T