[2.x] Merge the AssetService directly into the Asset facade

[emmadesilva]

Simplify Asset API by Merging AssetService into Asset Facade

This PR simplifies the Asset API by removing the AssetService class and moving all its functionality directly into the Asset facade. This change reduces complexity by removing an unnecessary layer of abstraction. This is part of #1904

Changes Made

• Removed AssetService class
• Updated Asset facade to implement all functionality directly using static methods
• Updated and renamed relevant test files

Motivation

This change is part of our ongoing effort to simplify the Hyde API and improve performance. By removing the AssetService class, we've eliminated an unnecessary abstraction layer while maintaining all existing functionality. We do lose the ability to swap the facade root for a mock, but this is such a slim use case that has little benefit,

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (97c7b5a) to head (f0192f5).

Additional details and impacted files

@@                     Coverage Diff                     @@
##             normalize-the-asset-api     #1908   +/-   ##
===========================================================
  Coverage                     100.00%   100.00%           
+ Complexity                      1875      1874    -1     
===========================================================
  Files                            192       191    -1     
  Lines                           4951      4948    -3     
===========================================================
- Hits                            4951      4948    -3     

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