Add random_gaussian_blur layer

[shashaka]

I have implemented the RandomGaussianBlur image processing feature. Please let me know if any further corrections or improvements are required.

here is my gist

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 77.77778% with 24 lines in your changes missing coverage. Please review.

Project coverage is 82.00%. Comparing base (734cd03) to head (cbfc2f6).

Files with missing lines	Patch %	Lines
...essing/image_preprocessing/random_gaussian_blur.py	77.14%	14 Missing and 10 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #20817      +/-   ##
==========================================
- Coverage   82.01%   82.00%   -0.01%     
==========================================
  Files         558      559       +1     
  Lines       52182    52290     +108     
  Branches     8067     8084      +17     
==========================================
+ Hits        42795    42879      +84     
- Misses       7421     7435      +14     
- Partials     1966     1976      +10     

Flag	Coverage Δ
keras	81.81% <75.92%> (-0.02%)	⬇️
keras-jax	64.27% <74.07%> (+0.02%)	⬆️
keras-numpy	58.99% <66.66%> (+0.02%)	⬆️
keras-openvino	29.82% <19.44%> (-0.03%)	⬇️
keras-tensorflow	64.80% <74.07%> (+0.01%)	⬆️
keras-torch	64.19% <75.92%> (+0.03%)	⬆️

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[fchollet]

Very nice -- thank you for the contribution! LGTM

[fchollet]

@shashaka do you have an email address I can contact you at?

[shashaka]

@fchollet
You can now reach me at [email protected].
I’ve also updated my GitHub profile to display my email address.