Large image vsis3 support

[BryonLewis]

resolves #438

• For now utilizes a branch of django-large-image for testing purposes: force-gdal-vsis3
  • Will be updated to a version number once merged
• Add the LargeImageVSIFileDetailMixin
• Add to development.py the GDAL environment variables/configs needed for MinIO access
  • This includes the LARGE_IMAGE_FORCE_GDAL_VSIS3 to force large-image to utilize /vsis3 for the path when make_vsi is called

TODO:

• Add the heroku/production settings for S3 access so that LargeImageVSIFileDetailMixin works properly
• Release the version of django-large-image with the force_gdal_vsis3 updates in it and update the pyproject.toml file
• Maybe do some A/B testing to show the reduction in RAM usage utilizing VSIS3 compared to the current method of loading the file entirely.