Change all references of "redis" to "valkey" #128
Description
Many file names, directories, code, docs reference "redis" instead of "valkey". Also, some binary files i.e. valkey-cli, valkey-server have been renamed but some scripts i.e. create-cluster are still referencing redis-cli, redis-server. Probably a good idea to break up into several smaller PR's as the scope is large. Lmk what y'all think, thanks!