chore(api): block migration during snapshotting and snapshotting during migration#2031

eofff wants to merge 10 commits intomaindeckhouse/virtualization:mainfrom

fix/api/fail-snapshot-while-migration-and-migration-while-snapshotdeckhouse/virtualization:fix/api/fail-snapshot-while-migration-and-migration-while-snapshotCopy head branch name to clipboard