✨ (theme) Add progress bar option (#1276)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
- Introduced progress bar functionality across various components for a
more interactive user experience.
	- Added progress tracking and display in chat sessions.
- **Enhancements**
- Adjusted layout height calculations in the settings and theme pages
for consistency.
- Improved theme customization options with progress bar styling and
placement settings.
- **Bug Fixes**
- Fixed dynamic height calculation issues in settings and theme side
menus by standardizing heights.
- **Style**
- Added custom styling properties for the progress bar in chat
interfaces.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/bot-engine/startSession.ts

@@ -137,6 +137,11 @@ export const startSession = async ({
       startParams.type === 'preview'
         ? undefined
         : typebot.settings.security?.allowedOrigins,
+    progressMetadata: initialSessionState?.whatsApp
+      ? undefined
+      : typebot.theme.general?.progressBar?.isEnabled
+      ? { totalAnswers: 0 }
+      : undefined,
     ...initialSessionState,
   }