Add optional OS version and feature

[jonesbusy]

Description

Needed to change the internal model since we need to include list of string

Required for #604

Testing done

Added 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 96.96970% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 87.88%. Comparing base (31b84b1) to head (aa1dd98).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/main/java/land/oras/Platform.java	96.29%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #608      +/-   ##
============================================
+ Coverage     87.00%   87.88%   +0.87%     
- Complexity      825      842      +17     
============================================
  Files            42       42              
  Lines          2532     2542      +10     
  Branches        312      314       +2     
============================================
+ Hits           2203     2234      +31     
+ Misses          206      185      -21     
  Partials        123      123              

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