Add RegistryUtil class in oshi-core to handle unexpected registry types

[rohan-coder02]

Description:

• RegistryUtil class can be used for reading Windows Registry values both StringValue and LongValue
• In the case of StringValue it handles both String (REG_SZ and REG_EXPAND_SZ) and Binary (REG_BINARY)
• This should help fix issue -> Unexpected registry type on Windows 7 #3023
• In the case of LongValue it handles both String (REG_SZ and REG_EXPAND_SZ) and Integer (REG_DWORD)
• This ensures the fix made in Handle DWORD registry keys in Windows Installed Apps implementation #2973 is intact

Testing:

Compared the outputs using oshi 6.9.1 and with the current code changes (oshi-core-6.9.2-SNAPSHOT) in ideal scenario, the outputs match.

SystemInfo si = new SystemInfo();

System.out.println(si.getOperatingSystem().getInstalledApplications());

System.out.println(si.getHardware().getGraphicsCards());

To fix #3023

[Copilot]

Pull Request Overview

This PR introduces a new RegistryUtil utility class to centralize and improve Windows Registry value reading by handling unexpected registry types (REG_BINARY, REG_SZ, REG_EXPAND_SZ, REG_DWORD). The refactoring addresses issue #3023 where registry values stored as binary data were causing failures, and maintains the fix from PR #2973 for timestamp handling.

Key changes:

• New RegistryUtil class with methods to read registry values as String or Long, with automatic type handling and conversion
• Binary data decoding support with multiple encoding fallbacks (UTF-16LE, UTF-8, Windows-1252, hex)
• Refactored InstalledAppsData and WindowsGraphicsCard to use the new utility instead of duplicated code

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 8 comments.

File	Description
oshi-core/src/main/java/oshi/util/platform/windows/RegistryUtil.java	New utility class providing centralized registry reading with type conversion and binary decoding support
oshi-core/src/main/java/oshi/driver/windows/registry/InstalledAppsData.java	Refactored to use RegistryUtil, removing ~110 lines of duplicated registry handling code
oshi-core/src/main/java/oshi/hardware/platform/windows/WindowsGraphicsCard.java	Updated to use RegistryUtil for reading registry string values

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[codecov]

Codecov Report

❌ Patch coverage is 60.00000% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.32%. Comparing base (b3ac570) to head (a12e3ca).
⚠️ Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
oshi-core/src/main/java/oshi/util/ParseUtil.java	60.00%	1 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3024      +/-   ##
==========================================
+ Coverage   84.87%   85.32%   +0.44%     
==========================================
  Files          32       32              
  Lines        1448     1458      +10     
  Branches      213      215       +2     
==========================================
+ Hits         1229     1244      +15     
+ Misses        123      116       -7     
- Partials       96       98       +2     

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[dbwiddis]

Love the shortened name here :)