.mpr support

[beletruz]

Files that are .mpr don't work properly, they don't get colored and the tree is wrong

[mikecentola]

What machine tool is .mpr for? Since it's not standard g-code the tree won't work without some significant changes. I might be able to get the regexs to work but it might have to wait until I can develop the language server.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity.