✨ Add support for loading existing message into the Message Builder

[Log1x]

Ideally you'd be able to convert an existing message back to a Builder instance to modify it's content.

I'm thinking ->from() or ->fill() which can be used like:

$this
    ->message()
    ->from($message)
    ->title('New fancy title')
    ->clearButtons()
    ->send($message->channel);

[mikield]

Can't we just use PHP cloning mechanism?

Someting like

clone $message
        ->title('New fancy title')
        ->clearButtons()
        ->send($message->channel);

[Log1x]

The idea with this was to be able to load an already sent Discord message from the bot back into the message builder to be able to edit it, etc.

[valzargaming]

->from is definitely the better option here. I think ->fill should be if you're passing an array of attributes.