Brightness: add new option --brightness-compact

src/data/help.json

@@ -1000,6 +1000,14 @@
                 "default": 10
             }
         },
+        {
+            "long": "brightness-compact",
+            "desc": "Set if multiple results should be printed in one line",
+            "arg": {
+                "type": "bool",
+                "default": false
+            }
+        },
         {
             "long": "sound-type",
             "desc": "Set what type of sound devices should be printed",