docs: Add release notes for stackablectl #87

Job	Run time
General Pull Request Checks / Run Cargo Deny (advisories)	49s
General Pull Request Checks / Run Cargo Deny (bans licenses sources)	52s
General Pull Request Checks / Run Cargo Udeps	2m 25s
General Pull Request Checks / Run RustDoc	1m 54s
General Pull Request Checks / Run Cargo Tests	1m 24s
General Pull Request Checks / All tests passed	2s
	7m 26s

Provide feedback