feat(website): update home page to showcase CherryPick DI documentation

- Replaced the main action button text with 'Explore CherryPick Documentation 🍒' instead of 'Docusaurus Tutorial'.
- Updated the button link to target /docs/intro (main docs entry point).
- Changed <Layout> props:
  - Page title now uses project title only (siteConfig.title)
  - Added a CherryPick-related site description for better SEO and context.
- The homepage is now tailored to reflect CherryPick's purpose as a Dart & Flutter DI library instead of Docusaurus boilerplate.

website/docs/core-concepts/binding.md

@@ -0,0 +1,41 @@
+---
+sidebar_position: 1
+---
+
+# Binding
+
+A **Binding** acts as a configuration for how to create or provide a particular dependency. Bindings support:
+
+* Direct instance assignment (`toInstance()`, `toInstanceAsync()`)
+* Lazy providers (sync/async functions)
+* Provider functions supporting dynamic parameters
+* Named instances for resolving by string key
+* Optional singleton lifecycle
+
+## Example
+
+```dart
+// Provide a direct instance
+Binding<String>().toInstance("Hello world");
+
+// Provide an async direct instance
+Binding<String>().toInstanceAsync(Future.value("Hello world"));
+
+// Provide a lazy sync instance using a factory
+Binding<String>().toProvide(() => "Hello world");
+
+// Provide a lazy async instance using a factory
+Binding<String>().toProvideAsync(() async => "Hello async world");
+
+// Provide an instance with dynamic parameters (sync)
+Binding<String>().toProvideWithParams((params) => "Hello $params");
+
+// Provide an instance with dynamic parameters (async)
+Binding<String>().toProvideAsyncWithParams((params) async => "Hello $params");
+
+// Named instance for retrieval by name
+Binding<String>().toProvide(() => "Hello world").withName("my_string");
+
+// Mark as singleton (only one instance within the scope)
+Binding<String>().toProvide(() => "Hello world").singleton();
+```