- Introduced a comprehensive README.md detailing the automated deployment process for an Oracle 19c Data Guard environment, including playbook references and execution workflows.
- Added playbooks for:
  - `oracle_software_19cEE_dataguard.yml`: Installs Oracle 19c software and configures the primary database.
  - `oracle_dataguard_hosts.yml`: Synchronizes /etc/hosts across cluster nodes for DNS resolution.
  - `oracle_dataguard_network.yml`: Configures listener and tnsnames for network communication.
  - `oracle_dataguard_pwd.yml`: Manages SYS password file distribution for RMAN authentication.
  - `oracle_dataguard_nomount.yml`: Prepares standby nodes for database cloning.
  - `oracle_dataguard_rman_clone.yml`: Executes RMAN cloning from primary to standby databases.
- Each playbook includes necessary tasks and error handling for a smooth deployment process.