chore: Add authors, code style

data/modules/armarx/skills/control.json

 {
   "general": {
-    "url": "https://git.h2t.iar.kit.edu/sw/armarx/skills/control"
+    "url": "https://git.h2t.iar.kit.edu/sw/armarx/skills/control",
+    "authors": [
+      "Christian Dreher <c.dreher@kit.edu>"
+    ]
   },
 
   "update": {
@@ -8,6 +11,7 @@
       "h2t_gitlab_slug": "sw/armarx/skills/control"
     }
   },
+
   "prepare": {
     "cmake": {
       "project_name": "armarx_control",
@@ -17,8 +21,8 @@
       }
     }
   },
-  "build": "cmake",
 
+  "build": "cmake",
 
   "features": {
     "mplib": "mplib",