Define and onboard model for subscription events

Define and onboard model for subscription events

	- created new yang model for subscription events; added in
	  ncmp-service
	- created new container/service to run an init container
	- added script file to the container
	- added Dockerfile to be the base image of the init container
	- health check for CPS added as part of script
	- removed previous patch modification in setup
	- changed path of models and dockerfile to main project
	- latest patch: changed connection to external ports of CPS

Issue-ID: CPS-1393
Signed-off-by: emaclee <lee.anjella.macabuhay@est.tech>
Change-Id: I2367020e57b34a669dda93050eeaeede5846304e