Added support for ASUS TUF Gaming K7

* Always sends save command when changing modes, this should be reworked to be optional in a future commit

Commit amended for code style by Adam Honse <calcprogrammer1@gmail.com>
This commit is contained in:
Internal Server Error - Gitea: Git with a cup of tea
500 Internal Server Error

Gitea Version: 1.28.0+dev-477-g8b6ad49a5f