Expand compatible format pool in the Nachet-interactive

From the README.md file, .tiff format will be used for the Nachet-interactive. I think we might be good to include JPEG, PNG, and other common format.

The reason I prompt up this question is that: there is a small bug related to image format in the Nachet-interactive https://nachet.ninebasetwo.xyz/. When upload a .tiff image, the interface does not show image but interestingly can do image classification. The Nachet-interactive seems only compatible with .jepg and .png image.

I reported this issue in https://github.com/ai-cfia/nachet-frontend/issues/89

Start with README.md to confirm the currently documented image formats, then review the related frontend report in issue #89 and the merged pull request #114 for existing work. Done means the supported format pool and its documentation agree with the formats the Nachet-interactive can handle.

Escrita pelo modelo de indexação a partir do texto da issue.