Implement documentation improvements (Issues #1, #3, #4, #5, #6)

[bhouston]

Implement Multiple Documentation Improvements

This PR addresses multiple documentation issues to improve the MyCoder documentation site.

Changes Implemented

Issue #1: Improve NodeJS Installation Instructions

• Added detailed NVM (Node Version Manager) installation instructions for all platforms
• Emphasized that NodeJS runtime is required for MyCoder
• Provided clear step-by-step instructions for installation
• Kept existing installation methods as alternatives

Issue #3: Redesign Homepage for MyCoder Documentation

• Removed default Docusaurus content from homepage
• Created custom MyCoder-specific homepage with relevant features
• Added a Quick Start section with code examples
• Added links to important documentation sections
• Improved styling and layout

Issue #4: Use Short Titles for Blog Posts in Navigation Panel

• Implemented custom BlogSidebarItem component to use short titles in navigation
• Updated blog configuration to support short title display
• Ensured all blog posts have proper shortTitle frontmatter
• Fixed inconsistent frontmatter naming (subTitle → shortTitle)

Issue #5: Enhance Author Profiles with Additional Social Links

• Updated author profiles with additional social links (Bluesky, Mastodon)
• Updated Twitter references to X (formerly Twitter)
• Added social links for MyCoder Team profile
• Ensured proper formatting for all social links

Issue #6: Link DriveCore, Inc. in the Footer

• Added hyperlink to DriveCore, Inc. in the footer pointing to https://drivecore.ai
• Updated Twitter reference to X in the footer

Testing

All changes have been tested locally to ensure they display correctly and function as expected.

Closes #1
Closes #3
Closes #4
Closes #5
Closes #6