Now that the share/filters folders are in $PATH when running the
commands, let's reference the scripts by their name.
Add more filter examples, some of them using the built-in filters, some
of them not...
Suggested-by: Teo Luppi <me@luppi.uk>
Suggested-by: Bence Ferdinandy <bence@ferdinandy.com>
Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-by: Moritz Poldrack <moritz@poldrack.dev>