chore: add changeset for initial release (#4)

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Co-authored-by: Claude <noreply@anthropic.com>

Author: ascorbic

.changeset/pink-paths-yawn.md

@@ -0,0 +1,13 @@
+---
+'vitest-browser-astro': minor
+---
+
+Initial release of vitest-browser-astro
+
+This package provides a Vitest browser mode renderer for Astro components, allowing you to test Astro components in a browser environment using Vitest's browser mode.
+
+Features:
+- Render Astro components in browser tests
+- Support for React components within Astro
+- Full access to browser APIs during testing
+- Plugin integration for Vitest configuration