Import Debian changes 0.4.15-1~bpo12+1

.gitlab-ci.yml

NEWS.rst

debian/changelog

debian/control

debian/gbp.conf

debian/libwireplumber-0.4-0.symbols

debian/salsa-ci.yml

debian/wireplumber.install

docs/gen-api-gtkdoc.py

docs/rst/lua_api/lua_local_module_api.rst

lib/wp/core.c

lib/wp/dbus.c

lib/wp/dbus.h

lib/wp/factory.c

lib/wp/link.h

lib/wp/module.c

lib/wp/module.h

lib/wp/node.c

lib/wp/spa-json.c

lib/wp/wp.c