Support latest version of BaaL (1.5.2) and add necessary utilities

[krshrimali]

What does this PR do?

Fixes #1297.

This PR attempts to add support for latest version of BaaL. PR: baal-org/baal#194 changed the way dropout layers were changed. Please also note that vissl dependencies were in conflict with BaaL, because of the way vissl decided to be way too strict with its requirements. Following error is raised when attempting to install BaaL with vissl:

The conflict is caused by:

    baal 1.5.2 depends on numpy<2.0.0 and >=1.21.2
    vissl 0.1.6 depends on numpy==1.19.5
    vissl 0.1.5 depends on faiss>=1.5.3
    vissl 0.1.4 depends on faiss>=1.5.3
    vissl 0.1.3 depends on faiss==1.5.3
    vissl 0.1.2 depends on opencv-python==3.4.2.17

The solution I'm proposing is to have a separate requirements file for BaaL. Locally, it will still raise some errors but BaaL will still be installed with warnings for conflicts (NumPy and scikit-learn).

Before submitting

• Was this discussed/approved via a Github issue? (no need for typos and docs improvements)
• Did you read the contributor guideline, Pull Request section?
• Did you make sure your PR does only one thing, instead of bundling different changes together?
• Did you make sure to update the documentation with your changes?
• Did you write any new necessary tests? [not needed for typos/docs]
• Did you verify new and existing tests pass locally with your changes?
• If you made a notable change (that affects users), did you update the CHANGELOG?

PR review

• Is this pull request ready for review? (if not, please submit in draft mode)

Anyone in the community is free to review the PR once the tests have passed.
If we didn't discuss your PR in Github issues there's a high chance it will not be merged.

Did you have fun?

Make sure you had fun coding 🙃

cc: @ethanwharris

[codecov]

Codecov Report

Merging #1315 (534d097) into master (07d63e3) will decrease coverage by 0.00%.
The diff coverage is 88.23%.

@@            Coverage Diff             @@
##           master    #1315      +/-   ##
==========================================
- Coverage   91.47%   91.47%   -0.01%     
==========================================
  Files         287      287              
  Lines       12881    12892      +11     
==========================================
+ Hits        11783    11793      +10     
- Misses       1098     1099       +1     

Flag	Coverage Δ
unittests	91.47% <88.23%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
.../image/classification/integrations/baal/dropout.py	92.30% <85.71%> (-2.94%)	⬇️
flash/core/utilities/imports.py	91.42% <90.00%> (-0.29%)	⬇️
...ash/image/classification/integrations/baal/data.py	87.85% <0.00%> (-0.94%)	⬇️
...ash/image/classification/integrations/baal/loop.py	94.92% <0.00%> (ø)
flash/text/question_answering/collate.py	97.64% <0.00%> (+2.35%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 07d63e3...534d097. Read the comment docs.

[ethanwharris]

Getting there 😃 Couple of suggestions / comments

[ethanwharris]

LGTM 😃