added blog post page, reverted back to flex blog landing, added types

frontend/components/PostBody.tsx

@@ -0,0 +1,11 @@
+import { Post } from "../types/index.ts";
+
+export const PostBody = function PostBody({ post }: PostBodyOpts) {
+  return (
+    <div class="p-6 bg-[#313244] shadow-md text-[#f5e0dc]">{post.body}</div>
+  );
+};
+
+export type PostBodyOpts = {
+  post: Post;
+};