Add Formbricks configuration to environment files and update package dependencies

- Introduced new environment variables for Formbricks in .env.backup and .env.example.
- Updated package.json and yarn.lock to include React and related types for improved functionality.
- Added new favicon images and manifest for better branding and user experience.
- Implemented new Svelte components for enhanced content management, including Badge, Card, OrganisationsBlock, and OpnFormBlock.
- Updated ContentRows component to support new block types.

public/favicons/browserconfig.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<browserconfig>
+  <msapplication>
+    <tile>
+      <square70x70logo src="/favicons/ms-icon-70x70.png" />
+      <square150x150logo src="/favicons/ms-icon-150x150.png" />
+      <square310x310logo src="/favicons/ms-icon-310x310.png" />
+      <TileColor>#ffffff</TileColor>
+    </tile>
+  </msapplication>
+</browserconfig>