OsdTab: move all OSD related settings into their own tab

OSD: add Left/Right Center options (will display vertically)
TablerIcons: add OSD Tab icon
i18n: added translation to all files for OSDTab (generated)

Commons/Settings.qml

@@ -114,7 +114,7 @@ Singleton {
   JsonAdapter {
     id: adapter
 
-    property int settingsVersion: 6
+    property int settingsVersion: 8
 
     // bar
     property JsonObject bar: JsonObject {
@@ -255,7 +255,14 @@ Singleton {
       property int lowUrgencyDuration: 3
       property int normalUrgencyDuration: 8
       property int criticalUrgencyDuration: 15
-      property bool enableOSD: true
+    }
+
+    // on-screen display
+    property JsonObject osd: JsonObject {
+      property bool enabled: true
+      property string location: "top_right"
+      property list<string> monitors: []
+      property int autoHideMs: 2000
     }
 
     // audio

Commons/TablerIcons.qml

@@ -112,6 +112,7 @@ Singleton {
     "settings-screen-recorder": "video",
     "settings-hooks": "link",
     "settings-notifications": "bell",
+    "settings-osd": "picture-in-picture",
     "settings-about": "info-square-rounded",
     "bluetooth": "bluetooth",
     "bt-device-generic": "bluetooth",