RESP 2/3 should be part of goredis.Options

[filipecosta90]

Currently, the v9 go-redis version is always trying to use RESP3 and in case of failure, it will fall back to resp2.
However, even on scenarios that the server supports resp 3, there are some considerations ( performance for example, or controlling the reply type ) in which we want to be able to chose.
Furthermore, in the event of old server/servers that don't support it, it's expensive to continuously pay the network and CPU for something that the user knows beforehand will fail.

[chayim]

Remember to consider redis/redis-specifications#12

[ndyakov]

Protocol option is added.