Redis Plugins [redis_cache & redis_queue] related updates

[shaangill025]

Signed-off-by: Shaanjot Gill [email protected]

• The RedisPlugins.md documentation depends on the approval of aries-acapy-cache-redis PR. Will take it out of draft once that PR is approved.
• run_docker file has been updated to accept NETWORK_NAME env variable. This is needed when loading up an ACA-Py agent with either redis_queue or redis_cache plugin when connected to a redis cluster, as the cluster requires a docker network with a predefined subnet.