feat(web/server) Add more options to public shared link (#1348)

* Added migration files

* Added logic for shared album level

* Added permission for EXIF

* Update shared link response dto

* Added condition to show download button

* Create and edit link with new parameter:

* Remove deadcode

* PR feedback

* More refactor

* Move logic of allow original file to service

* Simplify

* Wording

mobile/openapi/test/shared_link_response_dto_test.dart

@@ -66,6 +66,16 @@ void main() {
       // TODO
     });
 
+    // bool allowDownload
+    test('to test the property `allowDownload`', () async {
+      // TODO
+    });
+
+    // bool showExif
+    test('to test the property `showExif`', () async {
+      // TODO
+    });
+
 
   });