use BSAL_ACTOR_START to set the spawners for the controller

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
add a call to register a route with a tag and a source

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
fix regression

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
improve the name of the handler functions

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>