fix: begin fixing linux support

rust/src/modules/display_linux.rs

@@ -0,0 +1,8 @@
+use ini::Ini;
+use crate::model::{misc::Game, profile::Display};
+
+impl Display {
+    pub fn line_up(&self, _game: Game, _ini: &mut Ini) {
+        // nop
+    }
+}

rust/src/modules/mod.rs

@@ -7,4 +7,7 @@ pub mod keyboard;
 pub mod mempatcher;
 
 #[cfg(target_os = "windows")]
-pub mod display_windows;
+pub mod display_windows;
+
+#[cfg(target_os = "linux")]
+pub mod display_linux;