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>

server/src/entities/system-config.entity.ts

@@ -165,6 +165,11 @@ export enum Colorspace {
   P3 = 'p3',
 }
 
+export enum ImageFormat {
+  JPEG = 'jpeg',
+  WEBP = 'webp',
+}
+
 export enum LogLevel {
   VERBOSE = 'verbose',
   DEBUG = 'debug',
@@ -249,9 +254,11 @@ export interface SystemConfig {
     hashVerificationEnabled: boolean;
     template: string;
   };
-  thumbnail: {
-    webpSize: number;
-    jpegSize: number;
+  image: {
+    thumbnailFormat: ImageFormat;
+    thumbnailSize: number;
+    previewFormat: ImageFormat;
+    previewSize: number;
     quality: number;
     colorspace: Colorspace;
   };