feat: Controller changes to support Serving as a builtin source (#2357) #1288

Job	Run time
build-rust-amd64	6m 29s
Build binaries	6m 52s
build-rust-arm64	6m 58s
Build & push linux/amd64 and linux/arm64 (numaflow)	2m 35s
Bom	1m 17s
Release	18s
	24m 29s

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