TorCtl connect method inflexible

The connect method is a nice helper for cli initiation, but lacks sufficient call visibility to help in more general use cases. In particular it...

• sends feedback to stdout
• prompts for the controller password on stdin
• suppresses exceptions

To get around this I'm adding a more generic 'connectionComp' that does the icky bits of the connection negotiation I was trying to hide while still giving the caller what it needs to handle the connection process however it'd like.

Tested by exercising the connect functionality with cookies, password, and connection components to handle my TBB cookie auth renegotiation fix.