add support for frames-as-videos in nested groups

[sashankaryal]

This PR adds support for nested groups in imavid looker.

To recreate the dataset in the following gif:

import fiftyone as fo
import fiftyone.zoo as foz
from fiftyone import ViewField as F

dynamic_groups_25 = fo.Dataset("dynamic-groups-25")

every_th_sample = 25
# for each slice, for every th samples, assign an arbitrary "scene_id"
for slice in dynamic_groups_25.group_slices:
    dynamic_groups_25.group_slice = slice
    scene_id_counter = 0
    order_by_counter = 0
    for sample in dynamic_groups_25:
        sample.set_field("scene_id", scene_id_counter // every_th_sample)
        sample.set_field("timestamp", order_by_counter % every_th_sample)
        sample.save()
        scene_id_counter = scene_id_counter + 1
        order_by_counter = order_by_counter + 1
dynamic_groups_25.save()

[codecov]

Codecov Report

Attention: 361 lines in your changes are missing coverage. Please review.

Comparison is base (f16c1f6) 15.85% compared to head (db8e7ba) 15.86%.
Report is 8 commits behind head on release/v0.23.2.

Files	Patch %	Lines
...p/packages/core/src/components/Actions/Options.tsx	0.00%	62 Missing ⚠️
app/packages/core/src/components/Modal/Modal.tsx	0.00%	54 Missing ⚠️
app/packages/state/src/recoil/groups.ts	41.55%	45 Missing ⚠️
app/packages/state/src/hooks/useCreateLooker.ts	0.00%	30 Missing ⚠️
...mponents/Actions/GroupMediaVisibilityContainer.tsx	0.00%	18 Missing ⚠️
.../src/components/Modal/Group/DynamicGroup/index.tsx	0.00%	18 Missing ⚠️
app/packages/state/src/recoil/selectors.ts	10.00%	18 Missing ⚠️
.../src/components/Sidebar/Entries/PathValueEntry.tsx	0.00%	15 Missing ⚠️
...nts/Modal/Group/DynamicGroup/NestedGroup/index.tsx	0.00%	14 Missing ⚠️
...p/packages/looker/src/lookers/imavid/controller.ts	0.00%	12 Missing ⚠️
... and 17 more

Additional details and impacted files

@@                Coverage Diff                @@
##           release/v0.23.2    #3935    +/-   ##
=================================================
  Coverage            15.85%   15.86%            
=================================================
  Files                  731      731            
  Lines                81636    81853   +217     
  Branches              1093     1093            
=================================================
+ Hits                 12946    12987    +41     
- Misses               68690    68866   +176     

Flag	Coverage Δ
app	15.86% <15.25%> (+<0.01%)	⬆️

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[benjaminpkane]

LGTM! 🚀 I think one edge case worth noting pcd slices have an unexpected behavior right now

Screen.Recording.2023-12-19.at.6.06.33.PM.mov

[benjaminpkane]

🚀

[sashankaryal]

Re: pcd slices, will fix it in next PR!

Thanks for taking a look, and making it better! 🥳