Help: Overhaul and expand the Using Dependencies Guide
The guide previously only focused on the find_package() command, with a bias towards libraries. FetchContent was not mentioned at all. Reorganise and update the existing content. Add new sections to cover providing dependencies with FetchContent and dependency providers. Improve discoverability of the guide by mentioning it at the beginning of the find_package(), FetchContent and dependency provider docs.
Backport: release
Edited by Brad King