Add vitepress docs

docs/feeds/index.md

@@ -0,0 +1,19 @@
+# @welshman/feeds
+
+A powerful package for building and executing dynamic Nostr feeds.
+It provides a declarative way to define complex feed compositions using set operations (union, intersection, difference) and various filtering mechanisms.
+
+## What's Included
+
+- **Feed Core** - Declarative feed definition with composable operations
+- **Feed Compiler** - Transforms feed definitions into optimized relay requests
+- **Feed Controller** - Manages feed execution and event loading
+- **Feed Utils** - Helper functions for creating and manipulating feeds
+- **Feed Types** - Supports authors, kinds, tags, DVMs, lists, WOT, and more
+
+
+## Installation
+
+```bash
+npm install @welshman/feeds
+```