feat: add prompt suggestions and June events (#10726)

This PR adds the following two features

1. Prompt suggestions to get started with Copilot Chat
2. June events for each action

![CleanShot 2025-01-20 at 21 00
52@2x](https://github.com/user-attachments/assets/d73e7982-0f78-4d85-873e-da2c16762688)

---------

Co-authored-by: Pranav <pranavrajs@gmail.com>

app/javascript/dashboard/helper/AnalyticsHelper/events.js

@@ -100,6 +100,12 @@ export const OPEN_AI_EVENTS = Object.freeze({
   DISMISS_AI_SUGGESTION: 'OpenAI: Dismiss AI suggestions',
 });
 
+export const COPILOT_EVENTS = Object.freeze({
+  SEND_SUGGESTED: 'Copilot: Send suggested message',
+  SEND_MESSAGE: 'Copilot: Sent a message',
+  USE_CAPTAIN_RESPONSE: 'Copilot: Used captain response',
+});
+
 export const GENERAL_EVENTS = Object.freeze({
   COMMAND_BAR: 'Used commandbar',
 });