plugins: make text and utils component classes report support for MIP 1

plugins: make text and utils component classes report support for MIP 1

Make the following component classes report they support MIP 1
(everything from the text and utils plugins):

 - sink.text.details
 - source.text.dmesg
 - sink.text.pretty
 - sink.utils.counter
 - sink.utils.dummy
 - filter.utils.muxer
 - filter.utils.trimmer

Change-Id: Ic2a6d3fbb2ac511d048d7b26de5811a64f24cc69
Signed-off-by: Simon Marchi <simon.marchi@efficios.com>
Reviewed-on: https://review.lttng.org/c/babeltrace/+/7551
Tested-by: jenkins <jenkins@lttng.org>
Reviewed-by: Philippe Proulx <eeppeliteloop@gmail.com>
Reviewed-on: https://review.lttng.org/c/babeltrace/+/7575