"Requires Mount" ability for components

**What do you want to see?**
A new ability, Requires Mount, which can be applied to components. This ability would prevent a component from being installed on a vehicle without using a mount,

**How would it help players?**
This would make things a bit more flexible for modders - for instance, in Carrier Battles, the "standard" DF weapons need to be ginormous so they're impractical to install unmounted. Then there is no way to have a mount that's less than 1% of standard size. (Do FrEee mounts allow fractional percentages? If not, they should!)

**Alternatives**
Scale mounts aren't really necessary to begin with if component data file entries can access the hull size that a component is being added to. But if it's not a scale mount and just a regular CB style weapons mount...

**Screenshots and mockups**
N/A

**Things to consider**
Can't think of anything