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/route/health.rs

@@ -0,0 +1,29 @@
+use poem_openapi::{ApiResponse, OpenApi};
+
+use super::ApiCategory;
+
+#[derive(ApiResponse)]
+enum HealthResponse {
+    #[oai(status = 200)]
+    Ok,
+}
+
+pub struct HealthApi;
+
+#[OpenApi(prefix_path = "/v1/health-check", tag = "ApiCategory::Health")]
+impl HealthApi {
+    #[oai(path = "/", method = "get")]
+    async fn ping(&self) -> HealthResponse {
+        tracing::event!(target: "backend", tracing::Level::DEBUG, "Accessing health-check endpoint");
+        HealthResponse::Ok
+    }
+}
+
+#[tokio::test]
+async fn health_check_works() {
+    let app = crate::get_test_app();
+    let cli = poem::test::TestClient::new(app);
+    let resp = cli.get("/v1/health-check").send().await;
+    resp.assert_status_is_ok();
+    resp.assert_text("").await;
+}