feat: add secret crud to rli

[dines-rl]

Secret Commands (alias: s)

rli secret create <name>                 # Create a new secret. Value can be piped in or entered via stdin (securely)
rli secret list                          # List all secrets
rli secret get <name>                    # Get secret metadata by name
rli secret update <name>                 # Update a secret value Value can be piped in or entered via stdin (securely)
rli secret delete <name>                 # Delete a secret