Better Carpet Bots

Added

• /bot spawn [<name>] - spawn a bot at your position
• /bot <name> actions: attack, use, jump, sneak, sprint, stop, look, drop, dropstack, swaphands, inventory, kill
• attack/use support continuous and interval <ticks> subcommands
• /bots management commands: list, stop, kill, permissionLevel, skin
• Bot inventory screen with armor slot filtering and glass pane placeholder labels
• Bot inventory closes automatically when opener moves more than 10 blocks away
• Real player protection - names of players who have joined are permanently locked from bot use
• Offline player data for protected names is backed up to world/bot-backup/<name>.bak