Check `$ID_LIKE` in `tools/make-sysext`

Currently for supported distros in `tools/make-sysext` we check `$ID`. But for example Bazzite shows its `$ID` as `bazzite`, whereas its `$ID_LIKE` shows `fedora`

```
❯ catp /etc/os-release
NAME="Bazzite"
VERSION="43.20251028.0 (Silverblue)"
RELEASE_TYPE=stable
ID=bazzite
ID_LIKE="fedora"
...
```