feat(web,server): external domain setting (#6146)

* feat: external domain setting

* chore: open api

* mobile: handle serverconfig-externalDomain

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Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>

web/src/lib/stores/server-config.store.ts

@@ -26,6 +26,7 @@ export const serverConfig = writable<ServerConfig>({
   loginPageMessage: '',
   trashDays: 30,
   isInitialized: false,
+  externalDomain: '',
 });
 
 export const loadConfig = async () => {