Since "No subsystems found" and "Not all subsystems have a record in ships.tbl" are different warnings, they should have different flags. Follow-up to #4408.
* 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
Removed useless light_ignore_objnum and affected_objnum lighting data, light_add_point_unique() subsequently removed as well, and cleaned up unused parameters.
The check to not show `-destroyed` submodels is within `model_replicate_submodel_instance`, and that was only called for moveable submodels in the lab. This PR runs it for all submodels now. Tested and fix works as expected.
Allow scripts to reference submodels, submodel instances, and model instances. Currently just a few properties (like Orientation and Radius) can be accessed, but this can be easily expanded in the future.
Also add relevant functions to calculate real-world positions and orientations of rotated submodels.
Consolidated these functions and replaced the `find_submodel_point_*` functions with their closest `world_find_` counterparts. (One of those functions may not have actually worked correctly.) Also use the correct coordinate logic when returning normals from collision info in scripting.
Related to #3985 although not yet a fix for it.
Asteroth