Feature/name version conanbuildinfo txt

[memsharded]

Changelog: Bugfix: Include name and version in the data from conanbuildinfo.txt, so it is available in self.deps_cpp_info["dep"].version and self.deps_cpp_info["dep"].name, so it can be used in conan build and in test_package/conanfile.py.
Docs: conan-io/docs#1626

Close #6695

[jgsogo]

I doubt about the expected result. I understand that name might be confusing. Maybe it is better to provide a self.deps_cpp_info["xxxxx"].reference with the full Conan reference (without revisions and package_id).

Related to this issue (#6669)

[jgsogo]

Ok, understood the underlying issue. Here we are documenting and ensuring the value that the field .version has for all the scenarios (it was not working for the test_package one).