feat(pages): add /application/[guildId]/[channelId] (#4)

cypress/fixtures/channels/[channelId]/messages/get.ts

@@ -0,0 +1,15 @@
+import { Handler } from '../../../handler'
+import {
+  messageExampleComplete,
+  messageExampleComplete2
+} from '../../../messages/message'
+import { channelExample } from '../../channel'
+
+export const getMessagesWithChannelIdHandler: Handler = {
+  method: 'GET',
+  url: `/channels/${channelExample.id}/messages`,
+  response: {
+    statusCode: 200,
+    body: [messageExampleComplete, messageExampleComplete2]
+  }
+}