[FEATURE REQ] httpHeaders support

[jutley]

Is your feature request related to a problem? Please describe.

link-check supports the field httpHeaders, which can allow headers to be added to requests that match certain URLs. linkspector has a bit of code for this field, but the structure is different (only supports a single URL, for example), and the code isn't used anywhere.

This feature is important for being able to access documentation which requires bearer tokens, or other authentication.

Describe the solution you'd like

I'd like support for this field, as was supported for link-check.

Describe alternatives you've considered

I'll keep using link-check until this is supported. I was looking at this project because the link-check GH action seems to be replaced with one that uses this project.

Additional context

Nope

[gaurav-nelson]

@jutley Thanks for creating this issue. I've created the header-support branch to fix this issue. Can you test this for your use case?

git clone -b header-support git@github.com:UmbrellaDocs/linkspector.git
cd linkspector
npm i
node index.js check -c <configfile>

PS: https://github.com/UmbrellaDocs/linkspector/tree/header-support?tab=readme-ov-file#http-headers