🌐(frontend) add missing german translations

Oopsie. I forgot some keys for german, add them.

src/frontend/src/locales/de/rooms.json

@@ -169,6 +169,7 @@
       "effects": "",
       "chat": "",
       "transcript": "",
+      "screenRecording": "",
       "admin": "",
       "tools": ""
     },
@@ -177,6 +178,7 @@
       "effects": "",
       "chat": "",
       "transcript": "",
+      "screenRecording": "",
       "admin": "",
       "tools": ""
     },
@@ -192,6 +194,10 @@
       "transcript": {
         "title": "",
         "body": ""
+      },
+      "screenRecording": {
+        "title": "",
+        "body": ""
       }
     }
   },
@@ -217,6 +223,23 @@
       "button": ""
     }
   },
+  "screenRecording": {
+    "start": {
+      "heading": "",
+      "body": "",
+      "button": "",
+      "linkMore": ""
+    },
+    "stopping": {
+      "heading": "",
+      "body": ""
+    },
+    "stop": {
+      "heading": "",
+      "body": "",
+      "button": ""
+    }
+  },
   "admin": {
     "description": "",
     "access": {