Implementation of lead tracking through GTM and GA4

Set up full event tracking in Google Analytics 4 through Google Tag Manager for the landing page.

What was implemented:
configured the basic GA4 tag
implemented tracking of the generate_lead event through the visibility trigger of the Thank You block after form submission
additionally configured tracking of clicks on CTA buttons
configured tracking of external links
configured tracking of scroll depth

Also checked the correctness of all events firing in GTM Preview and Google Analytics 4 to ensure accurate data collection for further analysis and advertising optimization.