docs: partial recovery — add guide for host failure recovery and orphaned instance cleanup#261

tsivaprasad wants to merge 3 commits intomainpgEdge/control-plane:mainfrom

PLAT-313-recovery-approach-when-swarm-quorum-is-lostpgEdge/control-plane:PLAT-313-recovery-approach-when-swarm-quorum-is-lostCopy head branch name to clipboard