Added message tags capability

[WarPigs1602]

So, i'm added an IRCv3 message tags capability:

• It shows/sends the typing indicator on supported clients.
• It has an reduced/individual penalty to prevent lags or flooding disconnects.
• Fully IRCv3 compatible...

An typing indicator example are here:

By writing: @+typing=active
On pause: @+typing=paused
If line complete: @+typing=done

[MrIron-no]

As per the message-tags specification, the message-tags capability cannot be announced unless also supporting the client-only tags.

https://ircv3.net/specs/extensions/message-tags

[WarPigs1602]

I can work on it, and fix that issue (It's only an idea from me)