Implement Buildly Core Caching

[jefmoura]

Story

Cache stores data so that future requests for that data can be served faster, so it helps to reduce database access and dramatically increase site performance. We would like to start implementing a simple Buildly Core Caching system, so developers can improve more the performance of their application.

Tasks

1. Implement Memcached connection Implement Memcached connection #283
2. Implement RedisCache connection Implement RedisCache connection #284
3. Implement per-service cache Implement per-service cache #285
4. Add cache health check Add cache health check #296