docs: add v18 migration guide

docs/src/documentation/05-development/04-migration-guides/01-v18.mdx

@@ -0,0 +1,29 @@
+---
+title: v18
+description: How to migrate to Orbit 18.0.0
+redirect_from:
+  - /migration-guides/v18/
+---
+
+# Orbit Migration Guide v18
+
+This migration guide focuses on the process of migrating from Orbit v17 to v18.0, as some breaking changes were introduced.
+With this guide, we aim to walk through all the breaking changes and how they can be addressed, allowing the migration to be smoother and effortlessly.
+
+## Breaking changes
+
+### Seat component
+
+#### `title` and `description` props no longer have default values
+
+These props are used to give additional context to the rendered SVG element that visually represents the seat. They are not rendered on the screen, but are announced by screen readers.
+
+The previous default values were not meaningful and could lead to wrong or misleading information.
+
+As they are announced by screen readers, they should have meaningful and translated text.
+
+#### `label` and `price` props now only accept string
+
+These props used to accept React nodes as well, but this could result in some unexpected or wrong HTML structure.
+
+Therefore, these props now only accept strings.