Adding include_dir dlg command
Adding include_dir dlg command

This is meant to make it easier for users to find out the include
directory they need to add to their path when compiling shared libraries
against daliuge.

Signed-off-by: Rodrigo Tobar <bd955c861cbec2e41c0959cf13c7f573fa307e58@icrar.org>

steve-ord/daliuge,steve-ord/daliuge,steve-ord/daliuge,steve-ord/daliuge,steve-ord/daliuge,steve-ord/daliuge,steve-ord/daliuge