Merge topic 'fileapi'

b9c6f08276 Help: Add release note for fileapi feature
4b6b2a571c fileapi: extend codemodel v2 with directory details
eb8c7676a4 fileapi: extend codemodel v2 with a project model
42f0125ceb fileapi: Add test for cmakeFiles v1
6615408193 fileapi: add cmakeFiles v1
3f6ee75a66 fileapi: Add test for cache v2
7489e95b8e fileapi: add cache v2
ea0a060168 fileapi: Add test for codemodel v2
...

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !2706