chore: Add script to generate pypi mfa qr

[BrendanWalsh]

PyPi is now requiring MFA. I set up the necessary MFA configuration in PyPi and have stored relevant credentials in our secret store.

For convenience I'm providing this script to generate an MFA QR code for team PyPi maintainers.

e.g. (not a real QR code)

[github-actions]

Hey @BrendanWalsh 👋!
Thank you so much for contributing to our repository 🙌.
Someone from SynapseML Team will be reviewing this pull request soon.

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• fix: Fix LightGBM crashes with empty partitions
• feat: Make HTTP on Spark back-offs configurable
• docs: Update Spark Serving usage
• build: Add codecov support
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• refactor: make python code generation rely on classes
• style: Remove nulls from CNTKModel
• test: Add test coverage for CNTKModel

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[mhamilton723]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (7771c96) 86.26% compared to head (c03c0aa) 86.30%.
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2150      +/-   ##
==========================================
+ Coverage   86.26%   86.30%   +0.04%     
==========================================
  Files         312      325      +13     
  Lines       16486    16959     +473     
  Branches     1456     1524      +68     
==========================================
+ Hits        14222    14637     +415     
- Misses       2264     2322      +58     

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[BrendanWalsh]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[mhamilton723]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[BrendanWalsh]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).