RFC: replace "pry" with "debug"

[jay7x]

Use Case

While pry is nice and useful, there are cases when it's not enough:

• remote debugging (useful for Bolt tasks, Puppet providers, etc.)
• code navigation/stepping through the program

Both cases can be solved with other gems (pry-byebug, pry-remote, etc.) though..

My recommendation is, instead of managing the collection of pry-related gems, we maybe should consider switching to debug gem: https://github.com/ruby/debug