Support List commands

**Essential:**

- [x] LINDEX key index
- [x] LLEN key
- [x] LPOP key
- [x] LPUSH key value [value ...]
- [x] LRANGE key start stop
- [x] LSET key index value
- [x] RPOP key
- [x] RPUSH key value [value ...]
- [x] RPOPLPUSH source destination