feat: add rgb live cells

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 25 lines in your changes missing coverage. Please review.

Project coverage is 62.64%. Comparing base (f373f6b) to head (ea7b434). Report is 346 commits behind head on develop.

Files	Patch %	Lines
...pp/controllers/api/v2/rgb_live_cells_controller.rb	0.00%	25 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #2081 +/- ## =========================================== - Coverage 67.56% 62.64% -4.92% =========================================== Files 289 349 +60 Lines 7944 9805 +1861 =========================================== + Hits 5367 6142 +775 - Misses 2577 3663 +1086 ```

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