fix(server): use GPSLongitudeRef and GPSLatitudeRef EXIF fields

[ruippeixotog]

Description

Re-submission of #18403, which fixes EXIF parsing for GPS tags.

The solution for the issue requires updating exiftool-vendored and enabling the geolocation option. However, exiftool v13.22 seems to have introduced some issues with UTF-16LE file parsing (exiftool/exiftool#348), which is causing some e2e test assets to not work anymore.

Given upgrading exiftool could break Immich support for existing library files, I'm implementing fallback logic in metadata.repository.spec to convert XMP files to UTF-8 if needed. I'm not sure if this is the best way to go, other suggestions are appreciated.

Fixes #13053.

How Has This Been Tested?

e2e/src/api/specs/library.e2e-spec.ts uses UTF-16LE test assets and shows that those XMP files continue to be supported.

Followed the test plan in #18403 and confirmed the geolocation fix still worked. I can also upload test assets with affected geo tags and put them in an e2e test if needed.

Checklist:

• I have performed a self-review of my own code
• I have made corresponding changes to the documentation if applicable
• I have no unrelated changes in the PR.
• I have confirmed that any new dependencies are strictly necessary.
• I have written tests for new code (if applicable)
• I have followed naming conventions/patterns in the surrounding code
• All code in src/services/ uses repositories implementations for database calls, filesystem operations, etc.
• All code in src/repositories/ is pretty basic/simple and does not have any immich specific logic (that belongs in src/services/)

[github-actions]

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