feat: add plugin button and navigation slots for enhanced plugin integration across various components

src/app/pages/client/direct/Direct.tsx

@@ -44,6 +44,8 @@ import { useClosedNavCategoriesAtom } from '../../../state/hooks/closedNavCatego
 import { useRoomsUnread } from '../../../state/hooks/unread';
 import { useMarkRoomsAsRead } from '../../../hooks/useMarkAsRead';
 import { stopPropagation } from '../../../utils/keyboard';
+import { PluginButtonSlot } from '../../../features/settings/plugins/PluginButtonSlot';
+import { PluginNavSlot } from '../../../features/settings/plugins/PluginNavSlot';
 import { useSetting } from '../../../state/hooks/settings';
 import { settingsAtom } from '../../../state/settings';
 import {
@@ -228,6 +230,7 @@ export function Direct() {
                   </NavItemContent>
                 </NavButton>
               </NavItem>
+              <PluginNavSlot location="direct-messages" />
             </NavCategory>
             <NavCategory>
               <NavCategoryHeader>