otelzap: Implement methods on encoder #10722

Job	Run time
compatibility-test (~1.22.3, ubuntu-latest, 386)	2m 29s
compatibility-test (~1.22.3, ubuntu-latest, amd64)	2m 20s
compatibility-test (~1.22.3, macos-latest, amd64)	3m 11s
integration (test-mongo-driver)	7s
compatibility-test (~1.22.3, windows-latest, 386)	2m 48s
compatibility-test (~1.22.3, windows-latest, amd64)	8m 29s
compatibility-test (~1.21.10, ubuntu-latest, 386)	2m 34s
lint	4m 42s
compatibility-test (~1.21.10, ubuntu-latest, amd64)	2m 39s
compatibility-test (~1.21.10, macos-latest, amd64)	3m 55s
test-coverage	4m 10s
compatibility-test (~1.21.10, windows-latest, 386)	3m 36s
compatibility-test (~1.21.10, windows-latest, amd64)	5m 9s
test-race	3m 45s
test-integration	1s
test-compatibility	1s
	49m 56s

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