refactor(server): decouple generated images from image formats (#8246)

* rename

thumbnail config

update target paths, fix tests

rename to image settings

replace legacy enum

better typing

update sql

update api

remove config option

fix

* update docs

* update other thumbnail configs in migration

* keep legacy enum for now

* fix jumbled job names

* fix jumbled job names in tests

* rename thumbhash job

* rename dto

* fix tests

* preserve order

* remove unused import

* keep old fields in dto, marked deprecated

* update sql

---------

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

mobile/openapi/lib/api_helper.dart

@@ -79,6 +79,9 @@ String parameterToString(dynamic value) {
   if (value is EntityType) {
     return EntityTypeTypeTransformer().encode(value).toString();
   }
+  if (value is ImageFormat) {
+    return ImageFormatTypeTransformer().encode(value).toString();
+  }
   if (value is JobCommand) {
     return JobCommandTypeTransformer().encode(value).toString();
   }