anng: add repository link (#22)

Author: jonhoo

Cargo.lock

@@ -1,12 +1,13 @@
 [package]
 name = "anng"
-version = "0.1.0"
+version = "0.1.1"
 edition = "2024"
 license = "MIT OR Apache-2.0"
 authors = [
     "Jon Gjengset <jon.gjengset@helsing.ai>",
     "Felix Obenhuber <felix.obenhuber@helsing.ai>",
 ]
+repository = "https://github.com/nanomsg/nng-rs"
 rust-version = "1.85.0" # Waker::noop
 
 description = "Safe, async bindings to nanomsg next-generation (NNG)"