Add Office Space gallery page with all 23 images

- Create gallery.mdx showcasing all Office Space images organized by scene
- Add Cinema Enthusiast flair badge for gallery visitors
- Create cinema.svg badge (film reel design)
- Update flair count to 13 badges
- Add gallery to sidebar navigation with "New" badge

Features Peter, Lumbergh, The Bobs, the printer destruction scene,
Milton's stapler, Chotchkie's flair, and more iconic moments.

astro.config.mjs

@@ -99,6 +99,7 @@ export default defineConfig({
 				{
 					label: 'Community',
 					items: [
+						{ label: 'The Gallery', slug: 'community/gallery', badge: { text: 'New', variant: 'success' } },
 						{ label: 'Feedback', slug: 'community/feedback' },
 						{ label: 'Flair Leaderboard', slug: 'community/leaderboard' },
 						{ label: 'Credits', slug: 'community/credits' },