feat(sdk)!: add base key and support for key grants in ZTDF #1109

Job	Run time
mavenverify	2m 47s
platform-integration	4m 58s
Validate PR title	9s
platform-xtest / resolve-versions	9s
platform-xtest / cross-client-test (v0.4.34)	15m 17s
platform-xtest / cross-client-test (main)	25m 9s
ci	3s
	48m 32s

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