chore: expose metrics for min and max replicas (#2335) #1269

Job	Run time
Build binaries	6m 48s
build-rust-arm64	6m 41s
build-rust-amd64	7m 5s
Build & push linux/amd64 and linux/arm64 (numaflow)	2m 14s
Bom	1m 8s
Release	23s
	24m 19s

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