add .HIF file support

[mayonnaisehypernova]

• Resolves: [Bug]: HIF photos don't get preview generated #46408

Summary

I added hif as a supported file extension to the resources/config/mimetypemapping.dist.json to support .HIF files in nextcloud, especially for the preview generation and display of image files.

TODO

• Review and resolve any conflicts

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[artonge]

@mayonnaisehypernova thanks for the submission, and sorry for the lag. Any chance you can rewrite your commit as a conventional commit?

Something like: feat(files): support .HIF file

[artonge]

Superseded by #60161

[artonge]

Still, thanks a lot @mayonnaisehypernova :)