Merge branch 'add_dev_package' into 'debian/buster'

Add advligorts-dev package

See merge request cds/advligorts!235

debian/advligorts-dev.install

+usr/include/advligorts/*.h

debian/changelog

+advligorts (4.2.0~dev7-1) unstable; urgency=medium
+
+  * Added advligorts-dev package with some header files needed in other
+    projects. 
+
+ -- Erik von Reis <evonreis@caltech.edu>  Thu, 03 Jun 2021 10:59:35 -0700
+
 advligorts (4.2.0~dev6-1) unstable; urgency=medium
 
   * Site/Ifo mapping removed from the rcg

debian/control

@@ -256,3 +256,8 @@ Depends:
 Recommends:
  advligorts-mbuf-dkms,
 Description: Python library for opening and accessing the LIGO mbuf and posix shmem buffers.
+
+Package: advligorts-dev
+Architecture: any
+Description: Development files for advligorts
+ Header files for use in projects that share data structures with advligorts.