gnu: Add rust-readkey-0.1.

* gnu/packages/crates-io.scm (rust-readkey-0.1): New variable.

gnu/packages/crates-io.scm

@@ -28760,6 +28760,26 @@ reference counting.")
       "This package provides a simple library for reading hex colors")
     (license (list license:expat license:asl2.0))))
 
+(define-public rust-readkey-0.1
+  (package
+    (name "rust-readkey")
+    (version "0.1.7")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "readkey" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "0iiip8bq4yhal5rv6wlws0xgz798blki7s5ly5cmlwm1ssv03m46"))))
+    (build-system cargo-build-system)
+    (arguments `(#:skip-build? #t))
+    (home-page "https://github.com/segeljakt/readkey")
+    (synopsis "Library for finding out if a key is currently pressed on macOS")
+    (description
+     "This package provides a very small library for finding out if a key is
+currently pressed on macOS.")
+    (license license:expat)))
+
 (define-public rust-recycler-0.1
   (package
     (name "rust-recycler")