Add CLI for fetching sp promotions #446

Job	Run time
build	2m 14s
clippy	2m 1s
fmt	13s
tests (coverage-point-calculator)	1m 40s
tests (coverage-map)	1m 17s
tests (ingest)	1m 55s
tests (reward-scheduler)	49s
tests (task-manager)	58s
tests-postgres (boost-manager)	2m 31s
tests-postgres (file-store)	2m 15s
tests-postgres (iot-config)	2m 30s
tests-postgres (iot-packet-verifier)	3m 48s
tests-postgres (iot-verifier)	2m 57s
tests-postgres (mobile-config)	2m 45s
tests-postgres (mobile-packet-verifier)	2m 44s
tests-postgres (mobile-verifier)	2m 46s
build-release	0s
	33m 23s

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