wallpapers: watch wallpaper dir for changes

services/Wallpapers.qml

@@ -103,11 +103,26 @@ Singleton {
         }
     }
 
+    Process {
+        id: watchWallsProc
+
+        running: true
+        command: ["inotifywait", "-r", "-e", "close_write,moved_to,create", "-m", Config.paths.wallpaperDir]
+        stdout: SplitParser {
+            onRead: data => {
+                if (root.extensions.includes(data.slice(data.lastIndexOf(".") + 1)))
+                    getWallsProc.running = true;
+            }
+        }
+    }
+
     Connections {
         target: Config.paths
 
         function onWallpaperDirChanged(): void {
             getWallsProc.running = true;
+            watchWallsProc.running = false;
+            watchWallsProc.running = true;
         }
     }