WayVR: Use wayvr-dashboard as the default executable if it's not set

src/config_wayvr.rs

@@ -117,7 +117,7 @@ fn def_blit_method() -> String {
     String::from("dmabuf")
 }
 
-#[derive(Deserialize, Serialize)]
+#[derive(Clone, Deserialize, Serialize)]
 pub struct WayVRDashboard {
     pub exec: String,
     pub args: Option<String>,

src/overlays/wayvr.rs

@@ -270,11 +270,14 @@ fn toggle_dashboard<O>(
 where
     O: Default,
 {
-    let conf_dash = &app.session.wayvr_config.dashboard;
-
-    let Some(conf_dash) = &conf_dash else {
-        anyhow::bail!("Dashboard is not configured");
-    };
+    let conf_dash = app.session.wayvr_config.dashboard.clone().map_or_else(
+        || config_wayvr::WayVRDashboard {
+            exec: String::from("wayvr-dashboard"),
+            args: None,
+            env: None,
+        },
+        |conf| conf,
+    );
 
     if !wayvr.dashboard_executed && !executable_exists_in_path(&conf_dash.exec) {
         anyhow::bail!("Executable \"{}\" not found", &conf_dash.exec);