feat: Introduce my tweet trigger with execute step mutation

packages/backend/src/apps/twitter/triggers/my-tweet.ts

@@ -0,0 +1,24 @@
+import TwitterApi from 'twitter-api-v2';
+
+export default class MyTweet {
+  client: any
+
+  constructor(connectionData: any) {
+    this.client = new TwitterApi({
+      appKey: connectionData.consumerKey,
+      appSecret: connectionData.consumerSecret,
+      accessToken: connectionData.accessToken,
+      accessSecret: connectionData.accessSecret
+    });
+  }
+
+  async run() {
+    const response = await this.client.currentUser();
+    const username = response.screen_name;
+
+    const userTimeline = await this.client.v1.userTimelineByUsername(username);
+    const fetchedTweets = userTimeline.tweets;
+
+    return fetchedTweets[0];
+  }
+}