Purpose

• Adds a helpful debug message when fatal errors occur

Rationale

Ever since I added the exception catch and display of an error message I felt that people might not know what to do instead without me telling them to when they report the issue. This helps elevate that.

How did you test?

Manually validated the message returns correctly via the steps to verify. I did not think it was necessary to automate this piece as we don't mess with the __main__.py very much.

How to Verify

1. Check out this PR
2. Modify src/semantic_release/cli/commands/main.py and add raise Exception at the bottom of the file.
3. Execute semantic-release changelog and you will see the error and a recommendation
4. Execute semantic-release -vv changelog and you will see the stacktrace and error without any recommendation.