docs: add README

Author: rlibaert

README.md

@@ -0,0 +1,32 @@
+# Sync-Generic
+
+A Go package providing generic wrappers around standard library synchronization primitives.
+
+- Type safety at compile time
+- No need for type assertions in your code
+- Full API compatibility with standard library
+
+## Features
+
+- `Pool[T]` - Type-safe generic wrapper for `sync.Pool`
+- `Map[K, V]` - Type-safe generic wrapper for `sync.Map`
+
+## Usage
+
+```go
+// Pool example
+func _() {
+	pool := new(sync.Pool[[]byte]).New(func() []byte { return make([]byte, 1024) })
+	buffer := pool.Get()
+	defer pool.Put(buffer)
+	// use buffer
+}
+```
+
+```go
+// Map example
+func _() {
+	cache := new(sync.Map[string, int])
+	value, ok := cache.LoadOrStore("count", 42)
+}
+```