Show message in migrate screen if library is empty

app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/sources/MigrationSourcesController.kt

@@ -63,6 +63,13 @@ class MigrationSourcesController :
     }
 
     fun setSources(sourcesWithManga: List<SourceItem>) {
+        // Show empty view if needed
+        if (sourcesWithManga.isNotEmpty()) {
+            binding.emptyView.hide()
+        } else {
+            binding.emptyView.show(R.string.information_empty_library)
+        }
+
         adapter?.updateDataSet(sourcesWithManga)
     }