feat: add `servicePlanUniqueIdentifier` to entitlement resource #114

Job	Run time
run-go-license-check / Check licenses of dependencies	56s
run-reuse-license-check / lint-reuse	11s
run-make-reviewable-and-check-diff / reviewable-checkdiff	5m 16s
run-unit-test / unit-tests	2m 48s
	9m 11s

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