feat(web/server): webp thumbnail size configurable (#3598)

* feat(server/web): webp thumbnail size configurable

* update api

* add ui and fix test

* lint

* setting for jpeg size

* feat: coerce to number

* api

* jpeg resolution

---------

Co-authored-by: Jason Rasmussen <jrasm91@gmail.com>

server/src/domain/system-config/system-config.service.spec.ts

@@ -65,6 +65,10 @@ const updatedConfig = Object.freeze<SystemConfig>({
   storageTemplate: {
     template: '{{y}}/{{y}}-{{MM}}-{{dd}}/{{filename}}',
   },
+  thumbnail: {
+    webpSize: 250,
+    jpegSize: 1440,
+  },
 });
 
 describe(SystemConfigService.name, () => {