Padre::Plugin::Debug::Panel::Debugger - Interface to the Perl debugger.
Padre::Wx::Debugger provides a wrapper for the generalised Debug::Client.
It should really live at Padre::Debugger, but does not currently have sufficient abstraction from Wx.
Run current document under Perl debugger. An error is reported if current is not a Perl document.
Returns true if debugger successfully started.