Display playlist panel for videos played from homepage

[dan-niles]

Close #241

Modified VideoGrid and VideoCard components to accept a playlistSlug prop, so that the playlist panel can be displayed whenever videos from the homepage are played.

[codecov[bot]]

Codecov Report

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

Project coverage is 1.62%. Comparing base (6689f98) to head (cbc2633).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #251 +/- ## ===================================== Coverage 1.62% 1.62% ===================================== Files 11 11 Lines 1047 1047 Branches 158 158 ===================================== Hits 17 17 Misses 1030 1030 ```

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