Out of map orders leniency

[saurtron]

Work Done

• Allow centering area commands out of map.
• Allow attacking out of map units.
• Allow guarding out of map units when both the actor and guardee are builders.

Related issues

• https://github.com/beyond-all-reason/Beyond-All-Reason/issues/763

Remarks

• I think these actions are safe and wanted, since not being easy to target out of map units with attacks incentivises out of map attack hacks. Regarding the guard issue it's in the above referenced issue.
• Could have maybe touched some more orders but for now these seem the most pressing.
• Still doesn't allow attack ground out of map (in case someone is wondering).
• Also allowing any out of map unit to issue guard orders, don't see why we shouldn't allow this.

[sprunk]

A bunch of other commands (capture, repair etc) still check bounds, perhaps if guard loses the restriction then they all should?

[saurtron]

A bunch of other commands (capture, repair etc) still check bounds, perhaps if guard loses the restriction then they all should?

Maybe, since nobody asked for that I didn't want to lift too many restrictions at the same time. Some of these might need further checks in games to avoid hacks, like with out of map guard command.

That said, I'm open to removing further checks if you deem it necessary.