KAFKA-20639: Move EnvelopeUtils to server module #29660

Job	Run time
build / Configure Workflow	5s
build / Load Test Catalog	16s
build / Compile and Check (Merge Ref)	6m 32s
build / JUnit tests Java 25 (flaky)	5m 46s
build / JUnit tests Java 17 (flaky)	6m 10s
build / JUnit tests Java 25 (new)	7m 39s
build / JUnit tests Java 17	2h 14m 19s
build / JUnit tests Java 17 (new)	7m 57s
build / JUnit tests Java 25	2h 10m 4s
build / Collate Test Catalog	19s
build / CI checks completed	3s
build / Update Test Catalog	0s
	4h 59m 10s

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