Fix/custom client styles (#7373)

* Fix. qs styles

Signed-off-by: fufesou <shuanglongchen@yeah.net>

* custom client, options

Signed-off-by: fufesou <shuanglongchen@yeah.net>

* Move logo.svg to icon.svg

Signed-off-by: fufesou <shuanglongchen@yeah.net>

* Refact. Custom client, connection status ui.

Signed-off-by: fufesou <shuanglongchen@yeah.net>

* Custom client ui. Disable settings, hide "Change password"

Signed-off-by: fufesou <shuanglongchen@yeah.net>

* Custom client, logo align center

Signed-off-by: fufesou <shuanglongchen@yeah.net>

* Custom client, refact, outgoing ui

Signed-off-by: fufesou <shuanglongchen@yeah.net>

* Custom client, outgoing, settings icon

Signed-off-by: fufesou <shuanglongchen@yeah.net>

* Custom client, powered by RustDesk

Signed-off-by: fufesou <shuanglongchen@yeah.net>

* Custom client, remove unused SizeBox

Signed-off-by: fufesou <shuanglongchen@yeah.net>

* Update config.rs

* Update flutter_ffi.rs

---------

Signed-off-by: fufesou <shuanglongchen@yeah.net>
Co-authored-by: RustDesk <71636191+rustdesk@users.noreply.github.com>

flutter/lib/desktop/pages/server_page.dart

@@ -327,7 +327,7 @@ class _AppIcon extends StatelessWidget {
   Widget build(BuildContext context) {
     return Container(
       margin: EdgeInsets.symmetric(horizontal: 4.0),
-      child: loadLogo(30),
+      child: loadIcon(30),
     );
   }
 }