Programmatic text shape creation

Create and configure text shapes programmatically.

---

This example demonstrates how to create text shapes programmatically with various configuration options:

• Auto-sized text - Text shapes that automatically adjust width to fit content (autoSize: true)
• Fixed-width text - Text shapes with specified width that wrap content (autoSize: false, w: number)
• Text alignment - Horizontal alignment: start (left), middle (center), end (right)
• Font styles - Different fonts: draw (handdrawn), sans, serif, mono
• Sizes - Font sizes: s, m, l, xl
• Rich text formatting - Bold, italic, and other formatting using marks

Text shapes use rich text format internally. Use toRichText('your text') to convert plain text strings. For formatting like bold or italic, construct the rich text document with marks as shown in the example.