Use Compose in Migrate tab (#7008)

* Use Compose in Migrate tab

* Add missing header

* Remove unused files

* Fix build after rebase

* Changes from review comments

app/src/main/java/eu/kanade/data/source/SourceMapper.kt

@@ -3,11 +3,15 @@ package eu.kanade.data.source
 import eu.kanade.domain.source.model.Source
 import eu.kanade.tachiyomi.source.CatalogueSource
 
-val sourceMapper: (CatalogueSource) -> Source = { source ->
+val sourceMapper: (eu.kanade.tachiyomi.source.Source) -> Source = { source ->
     Source(
         source.id,
         source.lang,
         source.name,
-        source.supportsLatest
+        false
     )
 }
+
+val catalogueSourceMapper: (CatalogueSource) -> Source = { source ->
+    sourceMapper(source).copy(supportsLatest = source.supportsLatest)
+}