feat: support google tag manager template

[zhu-xiaowei]

Description

1. support google tag manager

General Checklist

• Added new tests to cover change, if needed
• Security oriented best practices and standards are followed (e.g. using input sanitization, principle of least privilege, etc)
• Documentation update for the change if required
• PR title conforms to conventional commit style
• If breaking change, documentation/changelog update with migration instructions

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

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (17d59a3) to head (047751d).

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #45   +/-   ##
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  Coverage   100.00%   100.00%           
=========================================
  Files           25        25           
  Lines         1129      1129           
  Branches       225       225           
=========================================
  Hits          1129      1129           

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[zxkane]

add gtm template usage in README

[zhu-xiaowei]

add gtm template usage in README

done.