📖 Add a security self assessment doc

[zhujian7]

Summary

Related issue(s)

#793

Fixes #

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.38%. Comparing base (9024cb0) to head (721b999).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #876   +/-   ##
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  Coverage   64.38%   64.38%           
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  Files         193      193           
  Lines       18926    18926           
=======================================
  Hits        12185    12185           
  Misses       5743     5743           
  Partials      998      998           

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[zhujian7]

/cc @qiujian16 @mikeshng

[qiujian16]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: qiujian16, zhujian7

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[qiujian16]

/assign @mikeshng

[mikeshng]

CC @pshickeydev

[mikeshng]

Some nits. There are also some TODO in the file. Is that ok?

[zhujian7]

There are also some TODO in the file. Is that ok?

Now there is only one TODO: Add 2-3 Case Studies, @mikeshng @qiujian16 could you help provide some case studies?

references: https://tag-security.cncf.io/community/assessments/guide/self-assessment/

Case Studies. Provide context for reviewers by detailing 2-3 scenarios of real-world use cases.