Stream song (#164)

* Added crates and dependency features

* Added endpoint to stream songs

* Changed name of function

* Song stream endpoint is now available

* Endpoint is now working

* Added test

* Warning fixes

* Code formatting

* Added TODO for later

* Test fix

* Version bump

src/callers/mod.rs

@@ -17,6 +17,7 @@ pub mod endpoints {
 
     pub const CREATESONG: &str = "/api/v2/song";
     pub const GETSONGS: &str = "/api/v2/song";
+    pub const STREAMSONG: &str = "/api/v2/song/stream/{id}";
     pub const CREATECOVERART: &str = "/api/v2/coverart";
     pub const GETCOVERART: &str = "/api/v2/coverart";
 }