Admin notes (#7259)

Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Client/Administration/UI/Tabs/AdminTab/AdminTab.xaml

@@ -15,6 +15,7 @@
             <cc:CommandButton Command="announceui" Text="{Loc Announce}"/>
             <cc:UICommandButton Command="callshuttle" Text="{Loc (Re)call Shuttle}" WindowType="{x:Type at:AdminShuttleWindow}"/>
             <cc:CommandButton Command="adminlogs" Text="{Loc Admin Logs}"/>
+            <cc:CommandButton Command="adminnotes" Text="{Loc Admin Notes}"/>
         </GridContainer>
     </BoxContainer>
 </Control>