Keybind that work with commander

[marcmad]

Describe the feature you'd like
I would want the following keybind:

1. Add to commander 1,2,3,...
2. Select all direct fire units not assigned to a commander/sensor
3. Select all indirect fire units not assigned to a commander/sensor
4. Select all indirect fire units on screen

Describe why do you think it is needed

1. We already have a add to group keybind but when we create a group with a commander, only the commander is considered in the group. Adding to group in that case will add it to the same group as the commander but not assign it to the commander, forcing you to still do it manually afterward.

2. selecting all units not belonging to a group, will also select units assigned to a commander and the following move command will break the link with the commander. It would be nice to have a keybind that work well with commanders. With 1) and 2) we can select units not assigned and assign them to a commander without having to click on the commander itself.

3. Direct and indirect fire units do not usually behave the same way. It would be nice to have 2 different keybinds for them. as 2), this would make it easier to assign indirect fire units to sensor unit.

4. Useful when indirect fire units are on the way but hard to select because assigned to a commander/sensor tower. That way, we can easily select them and move them out.

Thank!