Deprecate this role in favor of the new geerlingguy.mac collection

[geerlingguy]

I have consolidated my macOS-related roles into the new geerlingguy.mac collection.

This collection contains the exact same copy of this role at version 3.2.0 in its 1.1.1 release.

All future work will go into the collection role.

Migration steps:

1. Make sure you're running at least Ansible 2.9 (Ansible Core 2.10 or Ansible 3.0.0 or later recommended).
2. Install the collection: ansible-galaxy collection install geerlingguy.mac (you can also specify collections: inside your requirements.yml file separately from roles:).
3. Change all references to the geerlingguy.mas role to geerlingguy.mac.mas.

If you have any migration issues, please consider opening an issue on the geerlingguy.mac collection repository, a this repository will be archived, and the role on Galaxy will be marked as 'deprecated'.

TODO:

• Add a deprecation note to the README of this role and release a new tag so it appears on Galaxy.
• Add a deprecation note to the role's repository description.
• Archive the repository.

[geerlingguy]

Archiving next!