* Add Subsystem Flag to Hide Turrets from Ship Loadout Stats
The statistics summary window in the ship loadout editor shows various aspects and stats of the selected ship. These can be toggled and customized through the ships table, but one line is actually autogenerated, `+Turrets`. This is unideal for certain ships, especially those which use turrets on ships in non-standard ways (for example having an AI controlled turret which shoots bombs). In these cases, the turrets are not actual turrets, and it is confusing for players seeing that there is a turret on the ship in the loadout editor. (I can give more detailed examples using FotG if needed).
This PR adds a subsystem flag which allows the modders to hide a turret subsystem so it is not counted in the auto generation of the `Turrets` summary line. (As a slight cleanup I also removed cleaned up the whitespace formatting on a nearby, but unrelated line).
* sync names
* fix renaming
Mostly renaming of fields and functions, and moving some modelread sections into functions. This reorganization will put the code on a better footing for the model translation feature. No model translation code is included yet, and there should be no change in functionality.
1) Changes the submodel flags to use a flagset instead of several booleans
2) Adds `rotate_accel` to allow submodel rotation acceleration to be specified
Submodel acceleration can now be instant; dumb-rotating submodels always instantly accelerate (and have always done so)
This adds the "no sparks" flag for subsystems which disables the
generation of spark sources for that subsystem when it is hit.
This was requested by Axem.
This introduces a new mechanism for handling bit flags. Instead of using an int (or two, or three) to write bits into, this uses the std::bitset in a wrapper class that accepts an enum class as input. This means that certain classes of errors we've had a few of in the engine, where a coder used the wrong set of flags or checked them against the wrong variable (SF_STEALTH vs SIF_STEALTH, for example) can now be detected at a compiler level rather than not at all.
wookieejedi