[QuickAccent]Add setting to sort characters by use frequency (#22847)

* [Quick Accent] add toggle switch to sort characters by usage frequency

* [Quick Accent] if enabled, then sort by frequency for all toolbar triggers

* [Quick Accent] add "start selection from the left" toggle switch

* [Quick Accent] fix error SA1000: The keyword 'new' should not be followed by a space

* Fix C# analyzer build error

src/modules/poweraccent/PowerAccent.Core/Services/SettingsService.cs

@@ -92,6 +92,8 @@ public class SettingsService
                         }
 
                         ShowUnicodeDescription = settings.Properties.ShowUnicodeDescription;
+                        SortByUsageFrequency = settings.Properties.SortByUsageFrequency;
+                        StartSelectionFromTheLeft = settings.Properties.StartSelectionFromTheLeft;
                     }
                 }
                 catch (Exception ex)
@@ -191,6 +193,36 @@ public class SettingsService
             _showUnicodeDescription = value;
         }
     }
+
+    private bool _sortByUsageFrequency;
+
+    public bool SortByUsageFrequency
+    {
+        get
+        {
+            return _sortByUsageFrequency;
+        }
+
+        set
+        {
+            _sortByUsageFrequency = value;
+        }
+    }
+
+    private bool _startSelectionFromTheLeft;
+
+    public bool StartSelectionFromTheLeft
+    {
+        get
+        {
+            return _startSelectionFromTheLeft;
+        }
+
+        set
+        {
+            _startSelectionFromTheLeft = value;
+        }
+    }
 }
 
 public enum Position