Allow users to upload and delete assets associated with Content Library
components via the sidebar panel, under the "Advanced Details" section
of the "Details" tab. This is intended as a debug tool and power-user
feature, similar to the OLX editor provided there. It's also serving as
our interim image-upload solution, because it was easier to implement
than the full modal that integrates with TinyMCE.
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Co-authored-by: XnpioChV <xnpiochv@gmail.com>
