feat: add autocomplete support for tags, attributes & enums with links to docs

[codegangsta]

Description

This PR adds VS Code autocomplete support for Pine Design System web components. When developers use Pine
components in their HTML/JSX, VS Code, Cursor, Windsurf, Zed and neovim (via vscode-html-language-server) will now provide intelligent autocomplete suggestions including:

• Component tag names with descriptions
• Component attributes with types, defaults, and enum values
• Slots, CSS parts, and events documentation
• Links to Storybook documentation for each component

The feature consists of two main parts:

1. Custom Data Generator - A Stencil output target that generates VS Code HTML custom data during build
2. VS Code Settings Patcher - A postinstall script that automatically configures VS Code to use the custom
   data

New dependencies:

• @testing-library/dom (peer dev dependency - added by lockfile)

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

• tested manually

Test Configuration:

• Pine versions: 3.11.1
• OS: macOS
• Browsers: N/A (VS Code feature)
• Screen readers: N/A
• Misc: VS Code with HTML Language Server

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing tests pass locally with my changes
• Design has QA'ed and approved this PR

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[pixelflips]

LGTM! Thanks so much for this addition!