[Enhance] Run integration test on each task's environment

[eunwoosh]

Summary

This PR adds pre-merge tests with pip install .[each_task] to tox and applies them to github action for keeping it available to run each task with pip install .[each_task].

Add multiprocess package in requirement/base.txt

Currently merged PR uses multiprocess. But action task doesn't install it, so it makes an error for that (other tasks installed it). So I added it as requirement.

[sungmanc]

Nice implementation, LGTM

[codecov-commenter]

Codecov Report

Patch coverage has no change and project coverage change: +0.02 🎉

Comparison is base (dcf1ad0) 80.51% compared to head (99add93) 80.53%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1859      +/-   ##
===========================================
+ Coverage    80.51%   80.53%   +0.02%     
===========================================
  Files          477      481       +4     
  Lines        32839    32983     +144     
===========================================
+ Hits         26440    26564     +124     
- Misses        6399     6419      +20     

Impacted Files	Coverage Δ
...orithms/detection/adapters/mmdet/data/pipelines.py	89.79% <0.00%> (-3.26%)	⬇️
otx/mpa/modules/hooks/recording_forward_hooks.py	91.96% <0.00%> (-2.26%)	⬇️
otx/api/utils/shape_factory.py	93.84% <0.00%> (-1.54%)	⬇️
otx/algorithms/common/utils/data.py	48.48% <0.00%> (-1.02%)	⬇️
otx/algorithms/detection/tasks/inference.py	72.65% <0.00%> (-0.75%)	⬇️
otx/api/entities/dataset_item.py	98.88% <0.00%> (-0.56%)	⬇️
otx/mpa/modules/hooks/eval_hook.py	100.00% <0.00%> (ø)
otx/algorithms/common/configs/training_base.py	100.00% <0.00%> (ø)
...thms/segmentation/adapters/mmseg/data/pipelines.py	100.00% <0.00%> (ø)
...ms/classification/adapters/mmcls/data/pipelines.py	100.00% <0.00%> (ø)
... and 14 more

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[goodsong81]

Great! Might need some refactoring, but I'll handle it later w/ other Python version variant. Thanks!

[jaegukhyun]

Pre-Merge-Integration-Test Expected — Waiting for status to be reported
Should we remove pre-merge integration test?

[eunwoosh]

Pre-Merge-Integration-Test Expected — Waiting for status to be reported Should we remove pre-merge integration test?

It's already removed in my PR. I don't know why it's stuck at that test :(

[eunwoosh]

I understand what problem is. Current PR setting specifies Pre-Merge-Integration-Test as required for merging, but I removed that test. So it's stuck at that point. I think that setting should be changed after this PR is merged. Could you check that, @yunchu, @goodsong81 ?