[TCM] Role-based access control

**Product:** Tarantool Cluster Manager
**Since:** TCM 1.0.0, Tarantool 3.0
**Audience/target:** admins
**Root document:** TBD
**SME:** @ filonenko-mikhail 

# Details

- users
- passwords/secrets
- roles
- permissions: administrative and cluster permissions
- sessions
- password policy
  