Inline command format support

[nilium]

This isn't currently supported because it hasn't been terribly useful in testing, but it would help to be compatible with systems where redis-cli isn't available (i.e., telnet, as mentioned in the docs; socat; or netcat).

This could be handled similarly to simple strings, except the decoder would need to tokenize the string into a list of space-delimited fields once a CRLF is encountered. So, <<"foo bar\r\n">> would be equivalent to <<"*2\r\n" "$3\r\nfoo\r\n" "$3\r\nbar\r\n">> as a result, being equivalent to redis-cli sending its CLI arguments.

Docs: https://redis.io/topics/protocol#inline-commands

[nilium]

Although not described in the protocol documentation, redis-server will handle quoting and some escape codes inside of them. I'm not certain supporting this quirk of redis-server's RESP handling is desirable.