feat: Implement new message to a channel for slack w/o webhook

packages/backend/src/apps/slack/triggers.ts

@@ -0,0 +1,13 @@
+import { IJSONObject } from '@automatisch/types';
+import NewMessageToChannel from './triggers/new-message-to-channel';
+
+export default class Triggers {
+  newMessageToChannel: NewMessageToChannel;
+
+  constructor(connectionData: IJSONObject, parameters: IJSONObject) {
+    this.newMessageToChannel = new NewMessageToChannel(
+      connectionData,
+      parameters
+    );
+  }
+}