Add WSL2 guidance for Windows users

Problem

The documentation needs clearer guidance for installing and using SimVascular-related tools through Windows Subsystem for Linux 2 (WSL2).

Solution

• Document the recommended WSL2 setup.
• Identify required Windows and Linux configuration steps.
• Document installation and environment requirements.
• Explain how users should access files and run the relevant tools.
• Add common troubleshooting guidance and known limitations.
• Link the completed guidance from the appropriate Getting Started documentation.

Additional context

This topic is related to the broader Getting Started documentation update, but it has enough platform-specific requirements and troubleshooting considerations to be tracked separately. This issue is being separated from #59 so that the general Getting Started update and the platform-specific WSL2 guidance can progress and be reviewed independently. Following a discussion between @ryanspilker and @justran-csuf, @justran-csuf will lead the WSL2-specific guidance if his availability permits. @ryanspilker will assist with coordination, review, and integration with the broader Getting Started documentation.

Code of Conduct

• I agree to follow this project's Code of Conduct and Contributing Guidelines