feat: add visual dashboard generator via 'show' command

[tototofu123]

This PR adds a show subcommand that generates a static HTML dashboard visualizing the tokens defined in a DESIGN.md file. This provides a human-readable verification layer to complement the existing technical validation. I used the Stitch web DESIGN.md visualization as a reference for the generated HTML page structure and layout.

This feature addresses the following:

• Solves Generic Overview #18 (Generic Overview): Provides a fully automated, data-driven visual overview of all colors, typography, and component atoms.

Technical Implementation:

• Command Orchestration: packages/cli/src/commands/show.ts ensures dashboards are only generated after successful lint() validation.
• Token Resolution: Uses a new engine in packages/cli/src/commands/html.ts to surgically resolve internal ResolvedColor and ResolvedDimension objects into valid CSS strings.

[tototofu123]

Here are some links:

A visualization of how the HTML file looks like --
Click the Visualization Portal

The example repo of the HTML pages --
GitHub Repository