move quickshell config to subfolder to ease distribution

https://quickshell.outfoxxed.me/docs/guide/distribution/

.config/quickshell/ii/services/BooruResponseData.qml

@@ -0,0 +1,13 @@
+import "root:/modules/common"
+import QtQuick;
+
+/**
+ * A booru response.
+ */
+QtObject {
+    property string provider
+    property var tags
+    property var page
+    property var images
+    property string message
+}