Update apps.json: Add wisyCMS

wisyCMS is a content mangement system used for instance for the following websites:
https://www.3we.de
https://www.acandis.com
https://www.buendnis-familie-bruchsal.de
https://chantalsauvant.de
https://www.design317.de
https://www.hash.com
https://www.heisenberg-gymnasium.de
https://www.patchwork3d.de
https://www.stadtwerke-bruchsal.de
https://www.targomed.de
https://www.vbi-bw.de
etc.

src/apps.json

@@ -13243,6 +13243,12 @@
       },
       "website": "https://webpack.js.org/"
     },
+    "wisyCMS": {
+      "cats": [ "1" ],
+      "icon": "wisyCMS.svg",
+      "meta": { "generator": "^wisy CMS[ v]{0,3}([0-9\.,]*)\\;version:\\1" },
+      "website": "https://wisy.3we.de",
+    },
     "parcel": {
       "cats": [
         19