Add HTTP and Cache metrics

[jonesbusy]

Description

Add HTTP and Cache metrics

Testing done

Tests

Submitter checklist

• I have read and understood the CONTRIBUTING guide
• I have run mvn license:update-file-header, mvn spotless:apply, pre-commit run -a, mvn clean install before opening the PR

[codecov]

Codecov Report

❌ Patch coverage is 90.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 87.06%. Comparing base (1510efd) to head (2c69334).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/main/java/land/oras/auth/HttpClient.java	82.35%	1 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #643      +/-   ##
============================================
+ Coverage     86.75%   87.06%   +0.30%     
  Complexity      918      918              
============================================
  Files            43       43              
  Lines          2794     2814      +20     
  Branches        350      352       +2     
============================================
+ Hits           2424     2450      +26     
+ Misses          220      211       -9     
- Partials        150      153       +3     

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