FileUpload: Ability to use CDN or Signed URLs

[bradley-varol]

Filament is not able to load images from s3 because the bucket is not public and the requests are not signed.

Forms\Components\FileUpload::make('image_path')
    ->label('Image')
    ->image()
    ->imageEditor()
    ->signed() // i'd like to be able to do this
    ->formatStateUsing(fn (string $state): string => CDN::url($state)), // or this