infra: add ossf scorecard workflow and badge

[AbeCoull]

Issue #, if available:

Description of changes: Add in a scorecard to be more transparent around project standards and best practices. From https://github.com/ossf/scorecard.

This will give better goal setting around making changes that help with the score and security of the SDK.

Testing done:

Merge Checklist

Put an x in the boxes that apply. You can also fill these out after creating the PR. If you're unsure about any of them, don't hesitate to ask. We're here to help! This is simply a reminder of what we are going to look for before merging your pull request.

General

• [ ] I have read the CONTRIBUTING doc
• [ ] I used the commit message format described in CONTRIBUTING
• [ ] I have updated any necessary documentation, including READMEs and API docs (if appropriate)

Tests

• [ ] I have added tests that prove my fix is effective or that my feature works (if appropriate)
• [ ] I have checked that my tests are not configured for a specific region or account (if appropriate)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov[bot]]

Codecov Report

Merging #601 (bf09e39) into main (313e605) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##              main      #601   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          122       122           
  Lines         8100      8100           
  Branches      1815      1815           
=========================================
  Hits          8100      8100           

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (02316ff) to head (c8e9694). Report is 277 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #601   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          127       127           
  Lines         8222      8222           
  Branches      1832      1832           
=========================================
  Hits          8222      8222           

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[AbeCoull]

Revisiting at a later date.