* This helps with type checkers to know that things can be None or not (both to
silence previous warnings about "unnecessary" checks that are actually
necessary, and to ensure those checks aren't omitted by accident)
* We enforce default and copy constructors where possible, this isn't very
pythonic but we can't use copy.deepcopy on our types.
* The structs that have specialised constructors e.g. FloatVector or Subresource
also have those documented though we have no way to enforce it.
* Ideally we'd document every member unconditionally for best autocompletion,
but that's a lot of modification so for now we stick to just making sure that
any members that are struct types (or lists/tuples) have the :type:
declaration so that we can autocomplete inside them.
* Also added a script that can run as part of CI to verify that the docstring
matches, by generating a regex from the docstring documented parameter types
and return type and making sure we find a match within the C headers. This
ensures all parameters are documented with the right types, no extra
parameters are documented, and the return type is correct.
* The script also checks proper scoping so that if qrenderdoc docstrings
mention a renderdoc type, they need to scope it properly.