Add URI format for uniprot.core

[bgyori]

This PR adds a URI pattern for uniprot.core (which already exists as a prefix in Bioregistry but so far had no URI defined). Related to #1113

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 43.98%. Comparing base (6092b57) to head (ad720a8). Report is 9 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1114 +/- ## ======================================= Coverage 43.98% 43.98% ======================================= Files 123 123 Lines 8166 8166 Branches 1900 1900 ======================================= Hits 3592 3592 Misses 4369 4369 Partials 205 205 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.