Split registry with OCI layout

[jonesbusy]

Description

Split registry with OCI layout

Will simplify add more OCI layout operation not related to remote registry

Testing done

CI

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

Attention: Patch coverage is 90.65421% with 10 lines in your changes missing coverage. Please review.

Project coverage is 85.18%. Comparing base (01c94c7) to head (e56da0d).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/main/java/land/oras/OCILayout.java	90.56%	6 Missing and 4 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #198      +/-   ##
============================================
+ Coverage     85.06%   85.18%   +0.12%     
- Complexity      375      378       +3     
============================================
  Files            29       30       +1     
  Lines          1292     1303      +11     
  Branches        138      138              
============================================
+ Hits           1099     1110      +11     
  Misses          128      128              
  Partials         65       65              

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