feat: initialization migration to Nuxt + Backend

This commit initializes both the Nuxt frontend and the Rust backend of
the new version of phundrak.com

backend/src/main.rs

@@ -0,0 +1,5 @@
+#[cfg(not(tarpaulin_include))]
+#[tokio::main]
+async fn main() -> Result<(), std::io::Error> {
+    phundrak_dot_com_backend::run(None).await
+}