condition: implement lttng_condition_event_rule_generate_capture_descriptor_bytecode

condition: implement lttng_condition_event_rule_generate_capture_descriptor_bytecode

Generate the bytecode related to the tracer notification capture
feature.

The bytecode is stored alongside the lttng_event_expr in an internal
lttng_capture_descriptor object.

Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I4cfbdd9ab91328a5540ad19049e056fe3ce7f5ba
Depends-on: lttng-ust: I5a800fc92e588c2a6a0e26282b0ad5f31c044479