EventTeams

added new commands:

Added

• Added /event team delete <team> command.
• Added /event team list command.
• Added /event team info <team> command.
• Added /event start all command to teleport all teams to their assigned spawns.
• Added /event start <team> command to teleport a specific team.
• Added validation messages for missing or invalid team arguments.
• Restored missing command functionality to match the /event help menu.