feat: animations, responsive design

Animations
- added opacity animation for experience page
- added stagger animation for navbar items on mobile
- added animation for landing page for years and language indications

Pages
- About Page mockup

Redesign
- Navbar to include icons on desktop

components/tech_stack_templ.txt

@@ -0,0 +1,13 @@
+<a href=\"
+\" class=\"group flex items-center gap-2 px-3 py-2 rounded-md bg-slate-700/30 hover:bg-slate-700/50 transition-colors duration-200\">
+<img src=\"
+\" alt=\"
+\" class=\"w-5 h-5 object-contain\"> 
+<span class=\"text-emerald-500 w-fit font-medium group-hover:text-emerald-400\">
+</span></a>
+<div class=\"flex items-center gap-2 px-3 py-2 rounded-md bg-slate-700\">
+<img src=\"
+\" alt=\"
+\" class=\"w-5 h-5 object-contain\"> 
+<span class=\"text-white w-fit font-medium\">
+</span></div>