Minor extension repo enhancements

- Shortcut to settings from extensions tab
- Don't show error toast anymore if nothing's loaded
- Ability to copy extension repo URL to clipboard

app/src/main/java/eu/kanade/presentation/components/TabbedScreen.kt

@@ -101,6 +101,6 @@ data class TabContent(
     val titleRes: StringResource,
     val badgeNumber: Int? = null,
     val searchEnabled: Boolean = false,
-    val actions: ImmutableList<AppBar.Action> = persistentListOf(),
+    val actions: ImmutableList<AppBar.AppBarAction> = persistentListOf(),
     val content: @Composable (contentPadding: PaddingValues, snackbarHostState: SnackbarHostState) -> Unit,
 )