We already install libinput-test-suite if the meson option install-tests
is set, see
commit be7045cdc7
test: make the test suite runner available as installed binary
To make other tests easily available and more discoverable, add a new
tool "libinput test" with the matching man page. This will also help us
to enforce some of the namespacing a bit better.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
