Partially damaged components/etc should degrade

**What do you want to see?**
* If a component takes damage, it should degrade somehow.
* Hull abilities can be based on the total remaining HP of all components.
* Facilities can degrade similarly to components.
* Mounts? Hmm... should they degrade?
* Anything else?
* This can be defined in AbilityRules.txt, or maybe at the component/etc level to override.

**How would it help players?**
More realistic battles, rather than ships just winding up with a zillion 1/30HP components that are somehow still fully functional.

**Alternatives**
???

**Screenshots and mockups**
???

**Things to consider**
* Should mounts' abilities degrade?
* Is there anything else to be concerned about besides components, hulls, facilities, and mounts?