allow using custom aspect ratio at wallpapers

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/SetWallpaperActivity.kt

@@ -60,6 +60,7 @@ class SetWallpaperActivity : SimpleActivity(), CropImageView.OnCropImageComplete
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
         when (item.itemId) {
             R.id.save -> confirmWallpaper()
+            R.id.allow_changing_aspect_ratio -> crop_image_view.clearAspectRatio()
             else -> return super.onOptionsItemSelected(item)
         }
         return true

app/src/main/res/menu/menu_set_wallpaper.xml

@@ -6,4 +6,8 @@
         android:icon="@drawable/ic_check_vector"
         android:title="@string/save"
         app:showAsAction="ifRoom" />
+    <item
+        android:id="@+id/allow_changing_aspect_ratio"
+        android:title="@string/allow_changing_aspect_ratio"
+        app:showAsAction="never" />
 </menu>