RoomDrawer Cleanup

This started off as me just wanting to adjust the margin of the search bar but grew a touch ...

- Cleanup margins especially make the member search bar have the same padding as everything else
- Move room information title to header and align all buttons right.
- Make the room name actually bold
- Remove highlight from the user list item after the menu is closed
- Always use actual width so that the drawer isn't wider when modal
- Use control instead of pane for the search bar as the padding works more consistently
- Use BasicListItem instead of AbstractListItem for the member list as this has the layout predefined

![image](/uploads/ab2c4066479b0510bcb2fe6ae91f7bc3/image.png)

imports/NeoChat/Dialog/UserDetailDialog.qml

@@ -14,6 +14,8 @@ import NeoChat.Component 1.0
 Kirigami.OverlaySheet {
     id: root
 
+    signal closed()
+
     property var room
     property var user
 
@@ -164,5 +166,11 @@ Kirigami.OverlaySheet {
             FullScreenImage {}
         }
     }
+
+    onSheetOpenChanged: {
+        if (!sheetOpen) {
+            closed()
+        }
+    }
 }