WordPress Cluster 9.9.5

Introduces a docker-compose based dev env to the WPC. There is a need to expidite this to the master branch so folk on M1s can start using it. Others can continue to use the VVV env and switch over when desired / ready.

Current feature set:

NGINX (HTTP Only)
DB Import / MariaDB Optimised
Wordpress/Wordpress CLI
PHPFPM Optimised / xDebug / Redis
Redis (Unoptimised)
Elastic Search (Unoptimised)