feat: Support for Header response searching

[thickconfusion]

Is your feature request related to a problem? Please describe.
I have a website that is reporting its version in a header "X-Version" but not in body content.

Describe the solution you'd like
Can this be used to detect deployed version?

Describe alternatives you've considered
I have asked developers of the tool to provide the deployed version through a JSON output but they have not permitted this.

Additional context
I sent an email to developers@release-argus.io to simply ask about this topic and got a "Delivery Incomplete" notice.

[JosephKav]

Sorry that the email wasn't working. Not sure what was wrong there as I'm sure I tested initially. Anyway, not that it helps for this now, but it appears to be receiving emails now.

I will definitely look into adding getting the deployed version from a header. I've just been a bit distracted with other things recently but I should get round to this soon

[tobiasschuerg]

I'd also appreciate this.

Paperless NGX for example exposes its version via header (X-Version):
https://docs.paperless-ngx.com/api/#api-versioning

[tobiasschuerg]

Update: seems like Paperless also exposes the version via API: paperless-ngx/paperless-ngx#5012 (comment)

[thickconfusion]

@tobiasschuerg see the comments in this thread as a workaround.

paperless-ngx/paperless-ngx#8491