Ability to output multiple formats

[saveman71]

Environment

• Elixir & Erlang/OTP versions (elixir --version): 1.15.6

• Which version of Dialyxir are you using? (cat mix.lock | grep dialyxir): 1.4.3

Current behavior

Currently, when we run mix dialyzer --format github, it only outputs the annotations, resulting in a less practical CLI output (the first place you go when you have a failed build):

Each of our devs failed to see at first that there was now annotations in the diff view.

Expected behavior

Ability to run mix dialyzer --format github,dialyxir or mix dialyzer --format github --format dialyxir that would output both formats.