Add Markdown support and update member features

The commit adds Markdown rendering capabilities and makes several UI/UX
improvements across member-related features including profile display,
peer support badges, and navigation structure.

Includes:
- Added @tailwindcss/typography plugin
- New Markdown rendering composable
- Simplified member navigation links
- Enhanced member profile layout and styling
- Added peer support badge component
- Improved mobile responsiveness
- Removed redundant icons and simplified UI

app/components/AppNavigation.vue

@@ -157,7 +157,6 @@ const memberNavigationItems = [
   { label: "Events", path: "/events" },
   { label: "Members", path: "/members" },
   { label: "Resources", path: "/resources" },
-  { label: "Peer Support", path: "/peer-support" },
   { label: "Profile", path: "/member/profile" },
 ];