Prior to this commit, whether or not a brush was capable of using
certain options in Sculpt mode and whether or not these properties would
be shown to the user was spread across a number of files and
inconsistently applied.
This commit moves most of these checks to the bke::brush namespace so
that we have a single source of truth for these checks.
In total this commit:
* Changes all BrushCapabilitiesSculpt methods to use the equivalent
bke::brush function
* Removes brush type macros
* Renames BKE_brush_supports_secondary_color to fit the new pattern
* Refactors inverted logic for the `direction` property
Pull Request: https://projects.blender.org/blender/blender/pulls/137249
001b8912ff