chore: add log-out shortcut

Author: wash2

config/src/shortcuts/action.rs

@@ -151,6 +151,8 @@ pub enum System {
     Launcher,
     /// Locks the screen
     LockScreen,
+    /// Logs out
+    LogOut,
     /// Mutes the active audio output
     Mute,
     /// Mutes the active microphone

data/system_actions.ron

@@ -7,6 +7,8 @@
     BrightnessUp: "busctl --user call com.system76.CosmicSettingsDaemon /com/system76/CosmicSettingsDaemon com.system76.CosmicSettingsDaemon IncreaseDisplayBrightness",
     /// Opens the home folder in a system default file browser
     HomeFolder: "xdg-open ~",
+    /// Logs out
+    LogOut: "cosmic-osd log-out",
     /// Decreases keyboard brightness
     // KeyboardBrightnessDown,
     /// Increases keyboard brightness