add statping app (#1566)

* add statping app

* fix script mess

* remove revision

* Add category for statping_ng

Co-authored-by: oiseauroch <contact@oiseauroch.fr>
Co-authored-by: Alexandre Aubin <alex.aubin@mailoo.org>

apps.json

@@ -4158,6 +4158,11 @@
         "state": "notworking",
         "url": "https://github.com/YunoHost-Apps/staticwebapp_ynh"
     },
+    "statping_ng": {
+        "category": "system_tools",
+        "state": "working",
+        "url": "https://github.com/YunoHost-Apps/statping_ng_ynh"
+    },
     "streama": {
         "category": "multimedia",
         "level": 6,