Add a GitHub action to upload API documentation to a webpage

[boxanm]

Description

Summary:

Changes and type of changes (quick overview):

Add a GitHub action to upload API documentation to a webpage.
The webpage is already live on https://norlab-ulaval.github.io/libnabo/ and will be updated automatically on merge to master.

[boxanm]

Integration tests fail due to this line in libpointmatcher:

#if NABO_VERSION_INT < 10007
	#error "You need libnabo version 1.0.7 or greater"
#endif

I think keeping version numbers in header file is a bad practice and that's why this PR contains removal of NABO_VERSION_INT and NABO_VERSION from nabo.h . Dependency version check can and should happen in relevant requirement and CMakeList files. @RedLeader962 I suggest we merge this PR and remove the mentioned lines from libpointmatcher in the next release.

[boxanm]

Here's a related PR: norlab-ulaval/libpointmatcher#567

[boxanm]

Finally, I kept the NABO_VERSION_INT and NABO_VERSION in nabo.h so that the integration test doesn't fail and we avoid the chicken or the egg dilemma of whether first to merge libnabo or libpointmatcher. We can remove these constants in the following release.