🚀 Add "Coming Soon" Tabs and Templates for New Integrations

[pr-pilot-ai[bot]]

This PR adds "coming soon" tabs and templates for new integrations in the dashboard/templates/integrations.html file. The new integrations now have placeholders indicating that they are coming soon.

Changes Made

dashboard/templates/integrations.html

• Add tabs for Confluence, DataDog, Notion, and Vercel
• Include specific templates for each new integration

dashboard/templates/integrations/confluence.html

• Add Confluence integration template with placeholders for future features

dashboard/templates/integrations/datadog.html

• Add DataDog integration template with placeholders for future features

dashboard/templates/integrations/notion.html

• Add Notion integration template with placeholders for future features

dashboard/templates/integrations/vercel.html

• Add Vercel integration template with placeholders for future features

The new templates provide a brief overview of the upcoming features and capabilities for each integration.

[pr-pilot-ai[bot]]

I have replaced the coming_soon.html includes with specific templates for each integration (Confluence, DataDog, Notion, and Vercel) similar to logstash.html. The new templates are now in place.