Add Digest Auth Support #119

[drinkbird]

Description

Enables the use of Digest as an additional authentication option.

Limitations:

• Supports the MD5 algorithm only.
• Supports username and password input only. No advanced parameterization.

Guidance required:

1. What is the best place to add automated tests for Digest?
2. How can I verify this PR doesn't introduce breaking changes?
3. I'm only familiar with the UI usage and need some help verifying Bru Lang / Collection Runner / CLI

Screenshots:

Get request - Auth and Vars defined in the request.

Post request - Auth defined in the collection, Vars defined in the environment.

Contribution Checklist:

• The pull request only addresses one issue or adds one feature.
• The pull request does not introduce any breaking changes.
• I have added screenshots or gifs to help explain the change if applicable.
• I have read the contribution guidelines.
• Create an issue and link to the pull request. -> Aiming to be added to API / Collection Authorization #119

[helloanoop]

This is Awesome!

Thanks for adding Digest Auth to Bruno @drinkbird !