Summary:
Adding support for generated html documentation for OpenMP. Changing
Cmake files to build the documentation and adding the base templates for
future documentation to be added.
Reviewers: jdoerfert
Subscribers: aaron.ballman arphaman guansong mgorny openmp-commits sstefan1 yaxunl
Tags: #OpenMP
Differential Revision: https://reviews.llvm.org/D87797
Joseph Huber