Flash CLI and Flash Zero

[ethanwharris]

What does this PR do?

Fixes # (issue)

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[codecov]

Codecov Report

Merging #611 (543912c) into master (f9d3348) will increase coverage by 0.74%.
The diff coverage is 93.58%.

@@            Coverage Diff             @@
##           master     #611      +/-   ##
==========================================
+ Coverage   89.87%   90.62%   +0.74%     
==========================================
  Files         155      173      +18     
  Lines        8654     9183     +529     
==========================================
+ Hits         7778     8322     +544     
+ Misses        876      861      -15     

Flag	Coverage Δ
gpu	?
pytest	?
unittests	90.62% <93.58%> (+0.74%)	⬆️

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

Impacted Files	Coverage Δ
flash/audio/classification/data.py	93.75% <ø> (ø)
flash/audio/speech_recognition/data.py	76.72% <ø> (+2.58%)	⬆️
flash/graph/classification/data.py	93.10% <ø> (+13.79%)	⬆️
flash/image/classification/model.py	76.92% <ø> (ø)
flash/image/style_transfer/model.py	94.28% <ø> (+8.57%)	⬆️
flash/pointcloud/detection/data.py	82.85% <ø> (ø)
flash/pointcloud/segmentation/data.py	78.94% <ø> (ø)
flash/pointcloud/segmentation/model.py	76.66% <0.00%> (ø)
flash/video/classification/model.py	86.41% <ø> (ø)
flash/image/embedding/model.py	68.96% <33.33%> (+0.54%)	⬆️
... and 57 more

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[tchaton]

That's a beautiful work !