fix: add dependency between cli bin and plugins when built-in

fix: add dependency between cli bin and plugins when built-in

When building with '--enable-built-in-plugins' we use some linker
trickery to embed the plugins in the cli binary. The automake build
system is however unaware of this dependency and won't trigger a
relinking when a plugin is modified.

Use the  EXTRA_*_DEPENDENCIES [1] variable to add explicit dependencies
between the cli binary and each embedded plugin.

[1] https://www.gnu.org/software/automake/manual/html_node/Program-and-Library-Variables.html

Fixes #1237

Change-Id: Ib989edcc083c55509f4a990d90948761a18fc1d0
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Reviewed-on: https://review.lttng.org/c/babeltrace/+/7464
Tested-by: jenkins <jenkins@lttng.org>
Reviewed-by: Philippe Proulx <eeppeliteloop@gmail.com>