[feature] Manage shared, fPIC and header_only options automatically

[danimtb]

Changelog: Feature: Manage shared, fPIC, and header_only options automatically.
Changelog: Feature: Manage package ID for header-library package type automatically.
Docs: conan-io/docs#3296

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[uilianries]

Is it possible to add a new recipe attribute later, only working with Conan 2.x, that could be a shortcut to those new methods?

[AbrilRBS]

I have a comment about the Conan private methods, to see what you all think, but otherwise it is looking great so far :)

[memsharded]

Looking good so far!

[danimtb]

Is it possible to add a new recipe attribute later, only working with Conan 2.x, that could be a shortcut to those new methods?

@uilianries I think we already discussed this before starting the implementation and preferred not to bother with attributes as it will be less intuitive. Maybe in the future, we change our minds, but at the moment it is very straightforward to just declare the options or package type

[AbrilRBS]

This is looking great, good job @danimtb! Thanks for taking the initiative on it and implementing it :)

I have two minor questions besides the reviews that everyone else has already done, the rest looks great, congrats!

[AbrilRBS]

I'm thinking that if by the point this gets executed the package type has already been properly computed, why rely on the option? I don't actually know if having it is better or worse, so happy to hear your opinion :)

[AbrilRBS]

Looks good :)