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

README.md

@@ -17,7 +17,7 @@ Vesktop is a custom Discord desktop app
 
 ## Installing
 
-Visit https://vesktop.vencord.dev/install
+Visit https://vesktop.dev/install
 
 ## Building from Source
 
@@ -47,3 +47,14 @@ pnpm package --linux pacman
 # Or package to a directory only
 pnpm package:dir
 ```
+
+## Building LibVesktop from Source
+
+This is a small C++ helper library Vesktop uses on Linux to emit D-Bus events. By default, prebuilt binaries for x64 and arm64 are used.
+
+If you want to build it from source:
+1. Install build dependencies:
+    - Debian/Ubuntu: `apt install build-essential python3 curl pkg-config libglib2.0-dev`
+    - Fedora: `dnf install @c-development @development-tools python3 curl pkgconf-pkg-config glib2-devel`
+2. Run `pnpm buildLibVesktop`
+3. From now on, building Vesktop will use your own build