feat: add a Custom Type field's tab name to its description

[angeloashmore]

Types of changes

• [ ] Chore (a non-breaking change which is related to package maintenance)
• [ ] Bug fix (a non-breaking change which fixes an issue)
• [x] New feature (a non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Description

This PR adds a Custom Type field's tab name to its description. Since Shared Slices are generated as a shared type potentially used by multiple Custom Types, Shared Slice fields do not list their tab names.

A field's description looks like this:

/**
 * main_title field in *Tabbed Page*
 *
 * - **Field Type**: Title
 * - **Placeholder**: *None*
 * - **API ID Path**: tabbed_page.main_title
 * - **Tab**: Main
 * - **Documentation**: https://prismic.io/docs/core-concepts/rich-text-title
 */

Note the "Tab" bullet point.

Checklist:

• [ ] My change requires an update to the official documentation.
• [x] All TSDoc comments are up-to-date and new ones have been added where necessary.
• [x] All new and existing tests are passing.

[github-actions[bot]]

size-limit report 📦

Path	Size
dist/index.js	1.05 MB (+0.01% 🔺)
dist/index.cjs	1.06 MB (+0.01% 🔺)