Add CSV input example model. #272

Job	Run time
build (linux-amd64)	1m 14s
build (linux-x86)	1m 5s
build (linux-i386)	1m 10s
build (windows-x64)	2m 17s
build (windows-x86)	1m 47s
runtimes (testscript)	1m 23s
tools	1m 54s
test_e2e	1m 11s
docker_push (simer)	30s
containers (modelc, linux-amd64)	30s
docker_push (testscript)	38s
publish (linux-amd64)	6s
containers (modelc-x86, linux-x86)	44s
publish (linux-x86)	11s
containers (simbus-sa, linux-amd64)	22s
publish (linux-i386)	10s
publish (windows-x64)	7s
publish (windows-x86)	10s
	15m 29s

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