Hanami v2.0.0.alpha2 app template feedback

I had a look at dry-system and hanami, it’s much easier to expose a method Hanami.shutdown to be used in Puma before_fork.

# config/puma.rb

before_fork do
  Hanami.shutdown
end

The implementation should hook into Dry::System::Container#shutdown! which iterates for each registered bootable component and triggers the stop block.