Initialize es-metadata.yml for inventory

[Copilot]

This PR adds the required es-metadata.yml file to the root of the repository to initialize inventory metadata. The file contains the necessary configuration for service ownership and routing information as specified in the issue.

The file includes:

• Schema version 0.0.1
• Production flag set to false
• Accountable owners service GUID for proper service ownership tracking
• Default routing configuration for the DevDiv.NET Libraries area path

This metadata file will enable proper inventory tracking and management for the repository.

Fixes #7503.

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Pull Request Overview

This PR initializes inventory tracking for the repository by adding an es-metadata.yml configuration file. The file establishes service ownership and routing information required for proper repository management.

• Adds schema version 0.0.1 with production flag set to false
• Configures accountable owners service GUID for ownership tracking
• Sets up default routing to DevDiv.NET Libraries area path

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 69.01%. Comparing base (fb39755) to head (b3134a3).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7504   +/-   ##
=======================================
  Coverage   69.01%   69.01%           
=======================================
  Files        1482     1482           
  Lines      273999   273999           
  Branches    28258    28258           
=======================================
+ Hits       189093   189103   +10     
+ Misses      77520    77513    -7     
+ Partials     7386     7383    -3     

Flag	Coverage Δ
Debug	69.01% <ø> (+<0.01%)	⬆️
production	63.30% <ø> (+<0.01%)	⬆️
test	89.46% <ø> (ø)

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see 4 files with indirect coverage changes

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[ericstj]

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