adding sanity components

schemas/documents/categories.ts

@@ -0,0 +1,20 @@
+import { defineField, defineType } from 'sanity';
+
+export const categories = defineType({
+    name: 'categories',
+    title: 'Categories',
+    type: 'document',
+    fields: [
+        defineField({
+            name: 'name',
+            title: 'Name',
+            type: 'string',
+            validation: Rule => Rule.required()
+        }),
+        defineField({
+            name: 'description',
+            title: 'Description',
+            type: 'text'
+        }),
+    ],
+})