Feature Request: Add option to prevent multimedia uploading to not save media to the Media collection

[SpeeQz1]

Description

When a user uploads any form of media such as images or videos to such fields:

      name: 'images',
      type: 'upload',
      relationTo: 'media',
      hasMany: true,

Any uploaded media need to first be saved for them to become available in the collection entry draft. A problem that occurs is when users upload images which had some sort of a problem related to them such as:

• Defect in the media itself
• Wrong media uploaded
• Media is too big for the intended purpose

In such situations the user or admin would have to go in the Media collection and manually remove the wrongly uploaded media.

Proposed Solution

A simple solution would be to just add the option to the upload component where it can be modified so the component won't require saving of the files first and it would just show thumbnails of the files from the user's computer along with storing their URLs temporarily which point to the user's filesystem instead of references to the images themselves directly as they are stored in the Media collection inside the database.

After that all that has to be done is to execute a hook after the user saves the draft of the collection entry he was making at which point the actual saving of media would begin.

Benefits

• Prevents piling up of any unnecessary media inside the Media collection.
• Helps by making the user not make any unnecessary requests to Payload to store media which won't be used anyways.