There's a closed pull request on the void-packages repository

sauerbraten: add application menu
https://github.com/void-linux/void-packages/pull/36357

Description:
[Sauerbraten](http://sauerbraten.org/) is a free multiplayer & singleplayer first person shooter, the successor of the [Cube](http://www.cubeengine.com/) FPS.
`sauerbraten` does not provide a desktop menu, so it can only be opened via the cli.

```
➜  ~ xbps-query --regex -Rf sauerbraten
/usr/bin/sauer_client
/usr/bin/sauerbraten
```
#### Testing the changes
- I tested the changes in this PR: **briefly** (testing by adding .desktop manually. not build package)

![Screenshot_20220326_132604](https://user-images.githubusercontent.com/45872139/160227628-63cd0e47-361f-4cd6-a7e8-795038c5ea19.png)