Media Library add form support

MR created.

Attaching patch file for easier Composer usage.

Thanks for the review!

Can you provide some info on what the goal of this patch is & steps to review?

Hi,

With the patch, when using the media library widget to select media, you can now create a Fontawesome icon media on the fly.

Without the patch, you can only select existing medias.

This looks great. Merged. Thank you!

Automatically closed - issue fixed for 2 weeks with no activity.