Remove winit from compilation on Linux (#372)

Winit is only used in one line in MacOS and Windows, and unused in
Linux.

This change improves initial compile times from 3m 50s to ~3m 25 on my
machine.

spotify_player/Cargo.toml

@@ -36,7 +36,6 @@ tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }
 lyric_finder = { version = "0.1.5", path = "../lyric_finder" , optional = true }
 backtrace = "0.3.69"
 souvlaki = { version = "0.7.3", optional = true }
-winit = { version = "0.29.10", optional = true }
 viuer = { version = "0.7.1", optional = true }
 image = { version = "0.24.8", optional = true }
 notify-rust = { version = "4.10.0", optional = true, default-features = false, features = ["d"] }
@@ -49,6 +48,10 @@ ttl_cache = "0.5.1"
 copypasta = { version = "0.10.0", optional = true }
 clap_complete = "4.4.10"
 
+[target.'cfg(any(target_os = "windows", target_os = "macos"))'.dependencies.winit]
+version = "0.29.10"
+optional = true
+
 [target.'cfg(target_os = "windows")'.dependencies.windows]
 version = "0.52.0"
 features = [