feat: ⚡️ Add docs and connect Stripe

apps/docs/docs/get-started/_category_.json

@@ -0,0 +1,4 @@
+{
+  "label": "Get Started",
+  "position": 1
+}

apps/docs/docs/get-started/overview.md

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+---
+sidebar_position: 2
+---
+
+# Overview
+
+The best way for me to show you Typebot's simplicity is through a product tour video:
+
+<iframe width="900" height="500" src="https://www.youtube.com/embed/u8FZHvlYviw" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

apps/docs/docs/get-started/welcome.md

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+---
+sidebar_position: 1
+slug: /
+---
+
+# Welcome
+
+[Typebot](https://www.typebot.io) is a conversational form builder that helps you collect more responses compared to other form builders (Typeform, Google Forms, Tally...).
+
+This is the Typebot documentation. It's a great place to find most answers. Please use the search box in the top right or the navigation menu (soon available) on the left-hand side to find the answers you're looking for.
+
+This documentation is a work in progress.
+
+If you can't find what you're looking for, don't hesitate to contact me directly on the web app or at baptiste@typebot.io.