chore: Add general section

data/modules/armarx_integration/robots/armar6.json

 {
+  "general": {
+    "url": "https://git.h2t.iar.kit.edu/sw/armarx-integration/robots/armar6",
+    "authors": [
+      "Christian Dreher <c.dreher@kit.edu>"
+    ]
+  },
+
   "required_modules": {
     "armarx_integration/robots/armar6/models": {},
     "armarx_integration/robots/armar6/rt": {},

data/modules/armarx_integration/robots/armar6/models.json

 {
   "general": {
-    "url": "https://git.h2t.iar.kit.edu/sw/armarx-integration/robots/armar6/models"
+    "url": "https://git.h2t.iar.kit.edu/sw/armarx-integration/robots/armar6/models",
+    "authors": [
+      "Christian Dreher <c.dreher@kit.edu>"
+    ]
   },
 
   "update": {

data/modules/armarx_integration/robots/armar6/rt.json

 {
   "general": {
-    "url": "https://git.h2t.iar.kit.edu/sw/armarx-integration/robots/armar6/rt"
+    "url": "https://git.h2t.iar.kit.edu/sw/armarx-integration/robots/armar6/rt",
+    "authors": [
+      "Christian Dreher <c.dreher@kit.edu>"
+    ]
   },
 
   "update": {

data/modules/armarx_integration/robots/armar6/skills.json

 {
   "general": {
-    "url": "https://git.h2t.iar.kit.edu/sw/armarx-integration/robots/armar6/skills"
+    "url": "https://git.h2t.iar.kit.edu/sw/armarx-integration/robots/armar6/skills",
+    "authors": [
+      "Christian Dreher <c.dreher@kit.edu>"
+    ]
   },
 
   "update": {