build: update to 1ES PT

[hallvictoria]

Description

Moving to 1ES PT.
Added new pipelines referencing 1ES pipeline templates and using 1ES hosted pools.

• code mirror pipeline
• official build
• public build
• E2E tests

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PR information

• The title of the PR is clear and informative.
• There are a small number of commits, each of which has an informative message. This means that previously merged commits do not appear in the history of the PR. For information on cleaning up the commits in your pull request, see this page.
• If applicable, the PR references the bug/issue that it fixes in the description.
• New Unit tests were added for the changes made and CI is passing.

Quality of Code and Contribution Guidelines

• I have read the contribution guidelines.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 31.37%. Comparing base (2f65a2f) to head (a5dab45).
Report is 3 commits behind head on dev.

❗ Current head a5dab45 differs from pull request most recent head 3dd05b5

Please upload reports for the commit 3dd05b5 to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #1503      +/-   ##
==========================================
+ Coverage   30.48%   31.37%   +0.88%     
==========================================
  Files          36       36              
  Lines        2293     2327      +34     
  Branches      345      346       +1     
==========================================
+ Hits          699      730      +31     
- Misses       1592     1595       +3     
  Partials        2        2              

Flag	Coverage Δ
unittests	31.37% <ø> (+0.88%)	⬆️

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[manvkaur]

Please also add link to public pipeline that is running.

[manvkaur]

approving with suggestion so that you are not blocked on me to create the pipelines, just take a look at publishvstsfeed, if it is needed in common template