fix(jnv): improve installation script and update version support

[jsburckhardt]

Summary

This PR improves the jnv devcontainer feature with several enhancements:

Changes Made

Feature Configuration

• Version bump: Updated from 1.0.0 to 1.0.1
• Documentation: Added documentationURL pointing to the upstream repository

Installation Script Improvements

• Better error handling: Enhanced error checking throughout the installation process
• Multi-architecture support: Added support for aarch64 and armv7 architectures
• Improved OS detection: Better handling of OS and architecture detection
• Enhanced download process: More robust download and extraction logic
• Installation verification: Added verification step to ensure successful installation
• Cleaner code structure: Better organization with variables at the top and improved readability
• Temporary directory usage: Uses proper temporary directories for safer extraction

Testing Updates

• Version update: Updated test to use v0.6.1 instead of v0.1.2 for more current testing
• Scenarios configuration: Updated test scenarios to match the new version

Benefits

• More reliable installation across different architectures
• Better error reporting and debugging capabilities
• Support for newer versions of jnv
• Cleaner and more maintainable code

Testing

• Updated global test scenarios to use v0.6.1
• Installation verification added to ensure binary works correctly

Fixes issues with jnv installation reliability and adds support for additional architectures.