docs(vscode): rename plugin to 'CALM Tools', as 'calm' is taken

[markscott-ms]

Description

This pull request makes a minor update to the VSCode plugin's metadata, updating the display name and incrementing the version number.

• Changed the displayName in package.json from "CALM" to "CALM Tools" to better reflect the plugin's functionality.
• It was originally changed from "CALM Preview & Tools" to "CALM" to remove ambiguity in whether this was a preview (alpha) extension, but "CALM" (or rather "calm" is already an extension and marketplace prohibits name clashes)
• Bumped the plugin version from 0.4.2 to 0.4.3 in package.json.

Type of Change

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📚 Documentation update
• 🎨 Code style/formatting changes
• ♻️ Refactoring (no functional changes)
• ⚡ Performance improvements
• ✅ Test additions or updates
• 🔧 Chore (maintenance, dependencies, CI, etc.)

Affected Components

• CLI (cli/)
• Shared (shared/)
• CALM Widgets (calm-widgets/)
• CALM Hub (calm-hub/)
• CALM Hub UI (calm-hub-ui/)
• Documentation (docs/)
• VS Code Extension (calm-plugins/vscode/)
• Dependencies
• CI/CD

Commit Message Format ✅

Testing

• I have tested my changes locally
• I have added/updated unit tests
• All existing tests pass

Checklist

• My commits follow the conventional commit format
• I have updated documentation if necessary
• I have added tests for my changes (if applicable)
• My changes follow the project's coding standards

[rocketstack-matt]

There are docs that refer to the old name which should have been updated as part of this PR