tests: Add "signals" test object
It is worth to test marshalling of signal arguments, add a basic (and barebones) object to add signals and emission methods to, so bindings can test the signal handlers.
Related: gjs#377 (closed)
It is worth to test marshalling of signal arguments, add a basic (and barebones) object to add signals and emission methods to, so bindings can test the signal handlers.
Related: gjs#377 (closed)