Changes made:
* Add OpenMP linker flags.
* Copy the libomp.dylib to `2.93/lib/libomp.dylib`.
* Change the `LC_LOAD_DYLIB` item such that
the lib is found at `bpy.so/../../Resources/2.93/lib/libomp.dylib`.
Installation is done by D10664.
Reviewed By: #platform_macos, brecht
Maniphest Tasks: T86579
Differential Revision: https://developer.blender.org/D10657
ad31b13f91