Use streaming copy for config during copy and ensure to set target (2) and extract to copy method

[jonesbusy]

Description

Use streaming copy for config during copy and ensure to set target (2) and extract to copy method

Testing done

None, rely on existing 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 96.82540% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 88.59%. Comparing base (9277ec6) to head (ba88bcf).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/main/java/land/oras/CopyUtils.java	96.82%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #559      +/-   ##
============================================
+ Coverage     87.70%   88.59%   +0.88%     
- Complexity      792      793       +1     
============================================
  Files            42       42              
  Lines          2350     2349       -1     
  Branches        289      289              
============================================
+ Hits           2061     2081      +20     
+ Misses          177      155      -22     
- Partials        112      113       +1     

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