HDR image upload and moderation work + possible setup fixes

[CheesyLaZanya]

Closes #125 , #121 , #122

Also attempts to fix some setup issues facing new setups.

For #125

Updates our image metadata retrieval endpoint to also use exiftools used by our image metadata cleanup endpoint, to successfully get metadata even from cleaned images.

This is currently used in the hdr image upload process, and after this change, instead of empty metadata we can successfully retrieve the metadata we are interested in:

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For #121
Placeholder code has been added for future S3 bucket support, but it will need tested and enabled once available.

Assuming you were already setup with this project before, to test this change, you will need to add the new variables from the .env.template file to your .env file locally

## Docker compose variables
NODE_ENV=development
UPLOAD_DIR=./uploads

Then run task dev, and once the environment is running and you are signed in, you can upload a valid .dng file from the main page.

In the the root folder, in /uploads/pending, you will get the dng, and jpg preview, and a json file containing information about the upload.

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For #122

If you are an admin and go to http://localhost:5173/admin/moderation you will see any .dng files in the 'pending' bucket of your uploads folder.

If you accept them, they will move to /uploads/accepted, and if you reject them, they will move to /uploads/rejected.

Initial S3 support is laid out but will need testing once an S3 bucket is made available to us.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[crfearnworks]

I've been able to verify the json generated from my image is compatible with the example, and that the DNG, JPG, and JSON files are in /uploads/pending. After setting up my user as Admin, I have confirmed that the Accept and Reject buttons work and move all files out of Pending into either Accepted or Rejected.