Create process to allow HDR image uploads to local storage for testing purposes

[CheesyLaZanya]

For local development, and to continue moving forward until requested AWS credits are available, we need a way to upload images to local storage to await moderation.

• Allow only .dng files via file picker or drag and drop
• Support uploading multiple files.
• Show number of files selected.
• Show progress during upload.
• Show success message when complete.
• Save files in a locally viewable way
• Show errors if issues occur during upload
• Rename files to some unique identifier (utc)
• Call API to clean image metadata, only save cleaned image.
• Call API to create jpeg preview, match filename and save to the same folder.
• Call API to retrieve file metadata, match filename and save to the same folder.
• Call API to retrieve HDR stats, match filename and save to the same folder.
• Get information on user performing upload, match filename and save to the same folder.
• Update filename to avoiding collisions between users (+ username?)
• Add in S3 library to support future S3 upload work.