Slack /idea komutu gönderimlerini Google Sheets'e kaydet

## Needed pre-work: Add a Slack App 1. Visit {{ $env.API_BASE_URL }} click on New App and choose a name and workspace. 2. Click on OAuth & Permissions and scroll down to Scopes -> Bot token Scopes 3. Add the chat:write scope 4. Head over to Slash Commands and click on Create New Command 5. Use /idea as the command 6. Copy the test URL from the Webhook node into Request URL 7. Add whatever feels best to the description and usage hint 8. Go to Install app and click install