Refactor api into different route files

backend/src/routes/plans.rs

@@ -0,0 +1,21 @@
+use std::sync::Arc;
+
+use axum::{
+    extract::{Path, State},
+    http::StatusCode,
+    response::Response,
+};
+
+use crate::api::Api;
+use crate::web::{err, ok};
+
+pub async fn list_plans(State(api): State<Arc<Api>>) -> Response {
+    ok(StatusCode::OK, api.query.list_plans())
+}
+
+pub async fn get_plan(State(api): State<Arc<Api>>, Path(id): Path<String>) -> Response {
+    match api.query.get_plan(&id) {
+        Some(plan) => ok(StatusCode::OK, plan),
+        None => err(StatusCode::NOT_FOUND, "not-found", "plan not found"),
+    }
+}