Upgrade: New Home Screen for Khoj (#860)

* V1 of the new automations page
Implemented:
- Shareable
- Editable
- Suggested Cards
- Create new cards
- added side panel new conversation button
- Implement mobile-friendly view for homepage
- Fix issue of new conversations being created when selected agent is changed
- Improve center of the homepage experience
- Fix showing agent during first chat experience
- dark mode gradient updates

---------

Co-authored-by: sabaimran <narmiabas@gmail.com>

src/interface/web/tailwind.config.ts

@@ -1,6 +1,12 @@
 import type { Config } from "tailwindcss"
 
 const config = {
+    safelist: [
+        {
+        pattern: /to-(blue|yellow|green|pink|purple)-(50|100|200|950)/,
+        variants: ['dark'],
+        },
+    ],
     darkMode: ["class"],
     content: [
         './pages/**/*.{ts,tsx}',