Create hex_assignments crate (#817) #42

Job	Run time
clippy	1m 34s
fmt	7s
build	4m 40s
tests (mobile-packet-verifier)	1m 23s
tests (file-store)	1m 44s
tests (ingest)	1m 51s
tests (reward-scheduler)	1m 1s
tests (task-manager)	45s
tests-postgres (boost-manager)	2m 6s
tests-postgres (iot-config)	2m 17s
tests-postgres (iot-packet-verifier)	3m 7s
tests-postgres (iot-verifier)	2m 2s
tests-postgres (mobile-config)	1m 58s
tests-postgres (mobile-verifier)	2m 11s
build-release	0s
	26m 46s

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