feat: 支持调整程序内存中暂存的显示器配置。

src-tauri/src/rpc/channels.rs

@@ -0,0 +1,26 @@
+use std::sync::Arc;
+
+use tokio::sync::{broadcast, OnceCell};
+
+use super::DisplaySettingRequest;
+
+pub struct BoardMessageChannels {
+    pub display_setting_request_sender: Arc<broadcast::Sender<DisplaySettingRequest>>,
+}
+
+impl BoardMessageChannels {
+    pub async fn global() -> &'static Self {
+        static BOARD_MESSAGE_CHANNELS: OnceCell<BoardMessageChannels> = OnceCell::const_new();
+
+        BOARD_MESSAGE_CHANNELS.get_or_init(|| async {Self::new()}).await
+    }
+
+    pub fn new() -> Self {
+        let (display_setting_request_sender, _) = broadcast::channel(16);
+        let display_setting_request_sender = Arc::new(display_setting_request_sender);
+
+        Self {
+            display_setting_request_sender,
+        }
+    }
+}