Use codegen to generate multicluster base manifests #32855

Job	Run time
Compute outputs for use by other jobs	16s
build (linux/amd64, ubuntu-latest, amd64)	2m 55s
build (linux/arm64, github-arm64-2c-8gb, arm64)	4m 39s
build (linux/arm/v7, github-arm64-2c-8gb, arm)	6m 21s
build-scale	1m 59s
build-ubi	9m 12s
build-windows	2m 55s
build-antrea-migrator	12s
build-antrea-mc-controller	3m 21s
build-flow-aggregator	2m 25s
push-manifest	0s
	34m 15s

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