Simplify & Enhance Welcome Messages

[MagicTheDev]

https://github.com/MagicTheDev/ClashKing/blob/9cae40b55ed3d978de77339726a099e5a664a006/Setups/welcome_messages.py#L20-L119

Instead of the very bulky , hard to manage, & non-customizable welcome-messages currently
Let users create custom one, using - > https://autocode.com/tools/discord/embed-builder/
The output as js, so will have to edit it a bit to get json

• Convert previous welcome messages to a format compatible with this

Command flow:

• Run Command
• Message Explaining where to create the code for the custom message
• Explain in message, that if non-link buttons are created, they will have no functionality (for now)
• Explain how to create a link to a discord channel (the functionality of the current buttons)
• Buttons - one to open a modal to paste the code, second with link to the embed builder
• Upon completion show what the embed looks like