Support hierarchical views of source directories

SonarQube only reports measures/issues on directories containing some source files and nothing on intermediate directories. For instance in the following example:

src 
  |
  -- dir1
  |    |
  |    -- dir1.1 containing file A and B
  |    |
  |    -- dir1.2 containing file C
  |
  -- dir2 containing file D

There is no way to get any measure on 'dir1' directory whereas this consolidated view of dir1.1 and dir1.2 might be useful for the SonarQube users.