Injector API restructuring

Injector API:
- Removed socket connection
- Added dynamic API for injections (injection is allowed in all time
after Injector was injected)
- Debugger protocol is extensible now!

Added v8-debug dependence
(Small binary API what allow to extend debugger protocol)
In any case I need to fix compilation on linux.
I'm very happy that I get a way to modify debugger protocol. Long time I thinking that this is impossible.