readme: add release workflow status badge

Author: tsirysndr

README.md

@@ -12,6 +12,9 @@
   </a>
    <a href="https://crates.io/crates/music-player" target="_blank">
     <img src="https://img.shields.io/crates/dr/music-player" />
+  </a>
+   <a href="https://github.com/tsirysndr/music-player/actions/workflows/release.yml" target="_blank">
+    <img alt="release" src="https://github.com/tsirysndr/music-player/actions/workflows/release.yml/badge.svg" />
   </a>
   <a href="https://github.com/tsirysndr/music-player/actions/workflows/rust-clippy.yml" target="_blank">
     <img alt="rust-clippy" src="https://github.com/tsirysndr/music-player/actions/workflows/rust-clippy.yml/badge.svg?branch=master" />