feat: add jail command - #3

Adds a jail command that:

/jail <player> [time]

• Has permission group: commands.jail
• Can jail players for a time between 1 and 15 minutes, defaults to 1 minute, if not specified
• Teleports players to the given coordinates (edit in the file, first line)
• Remembers the previous coordinates
• Sets them to adventure mode
• Plays sounds when moving player to jail
• Plays sounds when moving player out of jail
• Plays a short sound every minute to indicate progression of sentence
• Shows title on screen with remaining time to serve
• Provides tab completion for player names
• Checks if target player is already jailed, preventing duplicate jailing, showing remaining time if already in jail
• Has protections for not teleporting people in dimensions other then the overworld (1.12.2 limitation)
• Can teleport players safely out of vehicles and trains (IV, IR, etc.)
• Correctly shows minute and minutes based on remaining time (impressive === 1 ternary if)
• Teleports players back to where they were (be careful when jailing flying players or in otherwise dangerous situations)
• Sets players back to survival mode on release

Adds an unjail command that:

/unjail <player>

• Has permission group: commands.jail
• Can release people from jail immediately