Add URI format to `obo`

[cthoyt]

Closes #910 This PR is superceded by #913

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (63b08fa) 40.86% compared to head (688e720) 40.86%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #911 +/- ## ======================================= Coverage 40.86% 40.86% ======================================= Files 135 135 Lines 7803 7803 Branches 1809 1809 ======================================= Hits 3189 3189 Misses 4418 4418 Partials 196 196 ``` | [Impacted Files](https://app.codecov.io/gh/biopragmatics/bioregistry/pull/911?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=biopragmatics) | Coverage Δ | | |---|---|---| | [src/bioregistry/version.py](https://app.codecov.io/gh/biopragmatics/bioregistry/pull/911?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=biopragmatics#diff-c3JjL2Jpb3JlZ2lzdHJ5L3ZlcnNpb24ucHk=) | `68.42% <100.00%> (ø)` | |

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[matentzn]

Sorry my internet connection was a bit slow, so I didn't realised you already opened a PR -> Feel free to close mine, I don't mind!