chore: adds FDv1DataSystem used by LDClient and FDv2DataSystem placeholder #181

Job	Run time
test-platforms-and-versions (ubuntu-latest, 8)	1m 20s
test-contract-tests	3m 8s
test-platforms-and-versions (ubuntu-latest, 19)	1m 21s
test-packaging	3m 43s
test-platforms-and-versions (ubuntu-latest, 11)	1m 20s
test-platforms-and-versions (ubuntu-latest, 17)	1m 5s
test-platforms-and-versions (ubuntu-latest, 17)	2m 37s
test-platforms-and-versions (ubuntu-latest, 19)	1m 21s
test-contract-tests	3m 8s
test-platforms-and-versions (ubuntu-latest, 11)	1m 20s
test-packaging	3m 43s
test-platforms-and-versions (ubuntu-latest, 8)	1m 20s
test-platforms-and-versions (ubuntu-latest, 8)	2m 38s
test-platforms-and-versions (ubuntu-latest, 11)	2m 30s
test-platforms-and-versions (ubuntu-latest, 19)	2m 37s
test-contract-tests	3m 8s
test-packaging	3m 43s
test-platforms-and-versions (ubuntu-latest, 17)	2m 37s
	42m 39s

Provide feedback