A server-side tag template to parse GA4 client requests to TikTok Events API request.

1. Updated logic for ttclid and cookie handling
2. Updated merge function
3. New logic for handling user data
4. New template fields added, also added support of _ttq cookie value
5. Added support for item name and category
6. Updated price logic in items
7. Minor updates
8. Updated to latest TikTok API Version
9. Fix for IP Address and Transaction ID for GA4 Client Requests
10. Fix for TikTok Contents from GA4 Items
11. Release of Tag Template