alpha-0.3

I'm still learning how to use this platform. Let's see if I can make a launch (and remember that it changed 😅).

What's new

• The configuration files have been moved out of ./src.
• New cool-down system.
• New loading screen.
• New "sendSeen" option for commands in ./config/commands.json. This option indicates whether the chat should be marked as seen when a command is executed.
• Now command prefixes can be optional, just set the "commandPrefix" option in ./config/commands.json to "" (empty string).
• Edited messages are displayed in the console.