Be a lot more specific about what to install

Due to a previous bug in the makefiles, debhelper didn't actually
install anything relevant (as the install target bailed even during a
dry-run). Prevent this from happening again by being very specific about
what gets installed and fail the package build process in case of
unexpected files.

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Guillaume Desmottes <guillaume.desmottes@collabora.co.uk>
Differential Revision: https://phabricator.apertis.org/D5250

debian/apertis-dev-tools.install

+usr/bin/ade
+usr/share/man
+etc/xdg/ade/sysroot.conf

debian/rules

@@ -5,3 +5,9 @@
 
 %:
 	dh $@
+
+override_dh_auto_install:
+	dh_auto_install --destdir=debian/tmp
+
+override_dh_install:
+	dh_install --fail-missing