Add a route to get the list of supported platforms for OTA

central_backend/src/server/web_api/ota_controller.rs

@@ -0,0 +1,7 @@
+use crate::ota::ota_update::OTAPlatform;
+use crate::server::custom_error::HttpResult;
+use actix_web::HttpResponse;
+
+pub async fn supported_platforms() -> HttpResult {
+    Ok(HttpResponse::Ok().json(vec![OTAPlatform::Wt32Eth01]))
+}