Add hooks (achievements ?) about assh

[ccharlton]

Cute. Don't forget one for when writing a config file with ASSH for the first time. :)

[ccharlton]

Is there an existing library you'd use to support this?

[moul]

Hum, I really don't know, actually I only thought about hooks for achievements (kind of https://github.com/icefox/git-achievements), but hooks may unlock some useful workflows

We need to think about which kind of hooks may be useful, for instance, something like:

• on_pre_ssh_connection(host, port)
• on_after_ssh_connection(host, port, pid?)
• on_ssh_connection_closed(host, port, duration, exitCode)
• on_error(host, port, errcode)

About the library specifically I have no preferences, just keep in mind I'm thinking about porting this project in golang to enhance speed, ease of install and recode everything from zero to fix some hacks I did in the Python version, I will probably keep the 2 versions for a time so people can keep their preferred one (#35)

[moul]

hooks are implemented, achievements aren't yet