Add the support of the BF.INSERT command

[zncleon]

This PR:

1. Introduce the bloom BF.INSERT command
2. Change the parameter parser error return to unified and explicit msg (e.g. "Bad capacity")

[1] https://redis.io/commands/bf.insert/

[zncleon]

The reasons Why I change the msg are:

1. If I direct parse (e.g. capacity) in BF.Reserve and use parser's take and GET_OR_RET in BF.INSERT, the error msg would be differentiated.
2. In this patch, the parse error msg is the same as the RedisBloom.

[mapleFU]

I'm a little busy today, I'll take a look carefully tonight

[mapleFU]

Looks ok, just some advices

[mapleFU]

I catch a cold these two days, sorry for late reply...

Other looks ok to me

[PragmaTwice]

Thank you for your contribution!