Add a debug mode when running rails_rbi:models

[hdoan741]

Describe the issue:

When running rails_rbi:models, if a plugin runs into issue, it is suppressed. See
https://github.com/chanzuckerberg/sorbet-rails/blob/master/lib/sorbet-rails/model_rbi_formatter.rb#L128

We should provide a way to run with allow_failure: false for debugging.

Expected behavior:

Introduce a debug mode, eg:

RAILS_RBI_DEBUG=true rake rails_rbi:models...

that would trigger a run with allow_failure false.

Versions:

• Ruby:
• Rails:
• Sorbet:
• Sorbet-Rails:

[coreyja]

This issues seems to be closed by #393!

The ENV VAR is SBR_DEBUG_MODE and you need version >= 0.7.3 to use it!