init: add code

src/main.tsx

@@ -0,0 +1,14 @@
+import { createRoot } from "react-dom/client";
+import { BrowserRouter, Routes, Route } from "react-router";
+import "./index.css";
+import App from "./App.tsx";
+import PastProjects from "./PastProjects.tsx"
+
+createRoot(document.getElementById("root")!).render(
+  <BrowserRouter>
+    <Routes>
+      <Route path="/" element={<App />} />
+      <Route path="/pastprojects" element={<PastProjects />} />
+    </Routes>
+  </BrowserRouter>,
+);