Initial conversion of browse tabs to full Compose

TODO:
- Global search should launch a controller with the search textfield focused. This is pending a Compose rewrite of that screen.
- Better migrate sort UI
- Extensions search

app/src/main/java/eu/kanade/presentation/browse/MigrateSourceState.kt

@@ -4,12 +4,15 @@ import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.setValue
+import eu.kanade.domain.source.interactor.SetMigrateSorting
 import eu.kanade.domain.source.model.Source
 
 interface MigrateSourceState {
     val isLoading: Boolean
     val items: List<Pair<Source, Long>>
     val isEmpty: Boolean
+    val sortingMode: SetMigrateSorting.Mode
+    val sortingDirection: SetMigrateSorting.Direction
 }
 
 fun MigrateSourceState(): MigrateSourceState {
@@ -20,4 +23,6 @@ class MigrateSourceStateImpl : MigrateSourceState {
     override var isLoading: Boolean by mutableStateOf(true)
     override var items: List<Pair<Source, Long>> by mutableStateOf(emptyList())
     override val isEmpty: Boolean by derivedStateOf { items.isEmpty() }
+    override var sortingMode: SetMigrateSorting.Mode by mutableStateOf(SetMigrateSorting.Mode.ALPHABETICAL)
+    override var sortingDirection: SetMigrateSorting.Direction by mutableStateOf(SetMigrateSorting.Direction.ASCENDING)
 }