Garage limit garaging and state preservation at hq

[HakonRydland]

What type of PR is this.

1. Bug
2. Change
3. Enhancement

What have you changed and why?

Information:
as per dev meeting 28.Aug 2021:
- Garaging has been limited to locations with flags present, these are: Outposts, Seaports, Airports/Bases, Resources, and Factories
- Vehicles left near HQ will maintain their state on save/load.

Please specify which Issue this PR Resolves.

closes #2091 #2029 #605

Please verify the following and ensure all checks are completed.

1. Have you loaded the mission in LAN host?
2. Have you loaded the mission on a dedicated server?

Is further testing or are further changes required?

1. No
2. Yes (Please provide further detail below.)

How can the changes be tested?

Steps:

1. get a vehicle, damage it, save with vehicle at HQ, reload. vehicle should be restored with the state preserved.
2. try to garage anywhere but at one of the aforementioned locations.

---

Notes:

[Lazejun]

Fuel, Ammo and Damage of Vehicles near HQ gets saved.

Garaging is limited to HQ, Outposts, Factories, Seaports, Resources, Airports.

should work as expected 👍

[Bob-Murphy]

Both open points resolved?
Ready to merge?

[HakonRydland]

Both open points resolved?
Ready to merge?

now both are resolved

[jaj22]

Yeah, I thought I had a PR I needed to approve but I couldn't find it.