feat(medusa, admin-ui): add description field to product categories (#3768)

* feat(medusa): add description field to product categories

* chore: set nullable to false

* chore: added UI for description

* chore: added codegen files

.changeset/wicked-adults-repair.md

@@ -0,0 +1,6 @@
+---
+"@medusajs/medusa": patch
+"@medusajs/admin-ui": patch
+---
+
+feat(medusa, admin-ui): add description field to product categories