Allow putsing emails in the DevAdapter

[paulcsmith]

#3 (comment)

• Add an optional print_emails option to the DevAdapter
• Default it to false

Carbon::DevAdapter.new(print_emails: true)

Will puts the email when delivering. This would go in this method:

carbon/src/carbon/adapters/dev_adapter.cr

Lines 4 to 6 in e58a024

	def deliver_now(email : Carbon::Email)
	@@delivered_emails << email
	end

[camuthig]

I'm looking to experiment with Crystal some, and am interested in helping out with this ticket. Is there any particular format you think would be best for the output?

[paulcsmith]

@camuthig That would be fantastic! I can't think of a particular format, but maybe something like this?

To: ...
From: ...
Subject: ...
Headers: ...
Text Body: ...
HTML Body: ...

I think those keys can be colorized as green so it's easier to differentiate between key value. You can use the colorize module built in to Crystal: https://crystal-lang.org/api/0.25.1/Colorize.html

LMK if you have any other questions. I'm happy to help :)