Add custom HTTP headers support to authentication flows

[rikvanduijn]

Summary

This PR adds support for custom HTTP headers in ROADtools authentication flows. Users can now specify custom headers that will be included in all HTTP requests made during authentication and API operations.

Changes

roadlib (roadtools/roadlib/auth.py):

• Added custom_headers attribute to the Authentication class to store custom headers
• Added set_custom_headers() method to configure custom headers from a dictionary
• Added --headers command-line argument that accepts JSON-formatted headers
• Modified all HTTP request methods (requests_get, requests_post, requests_put, requests_patch, requests_delete) to include custom headers in their requests
• Added JSON parsing logic in parse_args() to handle the --headers argument with error handling for invalid JSON

roadtx (roadtools/roadtx/main.py):

• Added --headers argument to the refreshtokento subcommand
• Added --headers argument to the interactiveauth subcommand

Use Case

This feature enables users to pass custom HTTP headers like X-AnchorMailbox used by for example PIM authentication flow.

Usage Example
roadtx gettokens --headers '{"X-AnchorMailbox": "Oid:objectid@tenantid"}'

[dirkjanm]

seems some artifacts of the merge are still in the code, if you can clean that up I can merge the PR. great addition!

[dirkjanm]

can you fix these artifacts? :)

[dirkjanm]

and these

[rikvanduijn]

Ah yes my changes were done so long a go. Was running way behind on your version. Will make sure to fix em!

[rikvanduijn]

Ive removed the artifacts

[olafhartong]

Did you do it or your assistant ? ;)

[rikvanduijn]

Did you do it or your assistant ? ;)

[olafhartong]

[jdye64]

I'm saving this thread. Good job to the both of you. Never thought I'd live to see the day that memes ended up in PR reviews but this made me laugh!