libvesktop: native dbus module for autostart & app badge (#1180)

Both setAppBadge and autoStart at system boot now use dbus calls. This means that autoStart will work in Flatpak

src/main/dbus.ts

@@ -0,0 +1,40 @@
+/*
+ * Vesktop, a desktop app aiming to give you a snappier Discord Experience
+ * Copyright (c) 2025 Vendicated and Vesktop contributors
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+import { app } from "electron";
+import { join } from "path";
+import { STATIC_DIR } from "shared/paths";
+
+let libVesktop: typeof import("libvesktop") | null = null;
+
+function loadLibVesktop() {
+    try {
+        if (!libVesktop) {
+            libVesktop = require(join(STATIC_DIR, `dist/libvesktop-${process.arch}.node`));
+        }
+    } catch (e) {
+        console.error("Failed to load libvesktop:", e);
+    }
+
+    return libVesktop;
+}
+
+export function getAccentColor() {
+    return loadLibVesktop()?.getAccentColor() ?? null;
+}
+
+export function updateUnityLauncherCount(count: number) {
+    const libVesktop = loadLibVesktop();
+    if (!libVesktop) {
+        return app.setBadgeCount(count);
+    }
+
+    return libVesktop.updateUnityLauncherCount(count);
+}
+
+export function requestBackground(autoStart: boolean, commandLine: string[]) {
+    return loadLibVesktop()?.requestBackground(autoStart, commandLine) ?? false;
+}