feat: add create collection controller + validator

app/validators/collection.ts

@@ -0,0 +1,16 @@
+import vine, { SimpleMessagesProvider } from '@vinejs/vine';
+import { Visibility } from '../enums/visibility.js';
+
+export const collectionValidator = vine.compile(
+  vine.object({
+    name: vine.string().trim().minLength(1).maxLength(254),
+    description: vine.string().trim().maxLength(300).optional(),
+    visibility: vine.enum(Visibility),
+    nextId: vine.string().optional(),
+  })
+);
+
+collectionValidator.messagesProvider = new SimpleMessagesProvider({
+  name: 'Collection name is required',
+  'visibility.required': 'Collection visibiliy is required',
+});