- Added Node.js as build dependency and removes build files from git. - Added version checks for both Go and Node.js. - Overhauled the js/css make target to only run when needed. - Merged the `generate` make target into `build` as per suggestion. Fixes: https://github.com/go-gitea/gitea/issues/6782 Fixes: https://github.com/go-gitea/gitea/issues/9216