feat: roster change objects #12802

Job	Run time
Spotless / Check	6m 38s
E2E Tests / Standard	33m 12s
HAPI Tests (Crypto) / Standard	25m 5s
Code / Compiles	6m 17s
Unit Tests / Standard	29m 55s
HAPI Tests (Misc) / Standard	33m 37s
HAPI Tests (Smart Contract) / Standard	53m 43s
HAPI Tests (Time Consuming) / Standard	32m 39s
HAPI Tests (Token) / Standard	27m 29s
Integration Tests / Standard	37m 10s
JRS Panel / Platform SDK	48m 56s
Snyk Scan / Standard	9m 28s
	5h 44m 9s

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