support video mixin; support multi-output

[reiase]

Signed-off-by: jie.hou jie.hou@zilliz.com

[codecov-commenter]

Codecov Report

Merging #750 (21b0725) into main (fa7a042) will decrease coverage by 0.05%.
The diff coverage is 67.79%.

❗ Current head 21b0725 differs from pull request most recent head 89871c5. Consider uploading reports for the commit 89871c5 to get more accurate results

@@            Coverage Diff             @@
##             main     #750      +/-   ##
==========================================
- Coverage   71.16%   71.10%   -0.06%     
==========================================
  Files         166      167       +1     
  Lines        7498     7556      +58     
  Branches     1219     1236      +17     
==========================================
+ Hits         5336     5373      +37     
- Misses       1799     1818      +19     
- Partials      363      365       +2     

Impacted Files	Coverage Δ
towhee/functional/mixins/computer_vision.py	22.22% <22.22%> (ø)
towhee/functional/mixins/data_source.py	40.00% <23.07%> (-37.78%)	⬇️
towhee/functional/mixins/parallel.py	95.00% <94.28%> (-0.39%)	⬇️
towhee/functional/data_collection.py	93.06% <100.00%> (+0.04%)	⬆️
towhee/functional/__init__.py	100.00% <0.00%> (ø)
towhee/models/retina_face/retinaface.py	0.00% <0.00%> (ø)

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[shiyu22]

/lgtm
/approve

[sre-ci-robot]

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