Generate JWT Secret if not provided

[aleksen]

Pull Request

Description

When I was trying to run marchat server locally to test it out, I used the interactive setup guide. It did not ask me for the JWT Secret, so it was set to a hardcoded string. Perhaps this could be a problem for other people setting up marchat servers using the interactive flag. So I could either add the JWT Secret to the interactive setup, or make the default be a generated hex value.

Also, some of the tests failed on my computer, since I already had a working setup in ~/.config/marchat. I inserted t.TempDir() in the tests that used the default location.

Fixes # (issue)

Type of change

• Bug fix
• New feature
• Breaking change
• Documentation update
• Other (please describe):

Checklist

• My code builds and passes all tests/CI
• I have commented my code, particularly in hard-to-understand areas
• I have updated documentation as needed
• I have added tests that prove my fix is effective or that my feature works (if applicable)
• I have assigned reviewers