Add 'optical' cellFormat

[BenjaminCharmes]

Close #787

Added 'optical' to cell formats

[codecov[bot]]

Codecov Report

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

Project coverage is 67.17%. Comparing base (bb141a6) to head (35b7be0).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #788 +/- ## ======================================= Coverage 67.16% 67.17% ======================================= Files 62 62 Lines 3828 3829 +1 ======================================= + Hits 2571 2572 +1 Misses 1257 1257 ``` | [Files](https://app.codecov.io/gh/the-grey-group/datalab/pull/788?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=the-grey-group) | Coverage Δ | | |---|---|---| | [pydatalab/pydatalab/models/cells.py](https://app.codecov.io/gh/the-grey-group/datalab/pull/788?src=pr&el=tree&filepath=pydatalab%2Fpydatalab%2Fmodels%2Fcells.py&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=the-grey-group#diff-cHlkYXRhbGFiL3B5ZGF0YWxhYi9tb2RlbHMvY2VsbHMucHk=) | `90.56% <100.00%> (+0.18%)` | :arrow_up: |

[cypress[bot]]

Passing run #1990 ↗︎

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Details:

Merge 35b7be0af94a81c06a34768a816e387bc9bbb122 into bb141a61b106122e76f83ff26f45...
Project: datalab	Commit: 027310d51e ℹ️
Status: Passed	Duration: 02:13 💡
Started: Jul 3, 2024 1:13 PM	Ended: Jul 3, 2024 1:15 PM

Review all test suite changes for PR #788 ↗︎

[ml-evs]

pre-commit.ci run

[ml-evs]

Ah the problem is that pre-commit CI cannot run the schema linter (I think). I'll manually run this.

[BenjaminCharmes]

Pending pre-commit run, this lgtm, is it ready to merge @BenjaminCharmes?

Yes !