feat(server): use embedded preview from raw images (#8773)

* extract embedded

* update api

* add tests

* move temp file logic outside of media repo

* formatting

* revert `toSorted`

* disable by default

* clarify setting description

* wording

* wording

* update docs

* check extracted image dimensions

* test that it unlinks

* formatting

---------

Co-authored-by: Alex Tran <alex.tran1502@gmail.com>

mobile/openapi/test/system_config_image_dto_test.dart

@@ -21,6 +21,11 @@ void main() {
       // TODO
     });
 
+    // bool extractEmbedded
+    test('to test the property `extractEmbedded`', () async {
+      // TODO
+    });
+
     // ImageFormat previewFormat
     test('to test the property `previewFormat`', () async {
       // TODO