Add chart ticks font option (#1000)

Author: MS

blazorbootstrap/Models/Charts/ChartOptions/ChartOptions.cs

@@ -475,6 +475,12 @@ private void SetTicksAlignment(TicksAlignment interactionMode) =>
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
     public string? Color { get; set; }
 
+    /// <summary>
+    /// Font of ticks
+    /// </summary>
+    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+    public ChartFont? Font { get; set; } = new();
+
     /// <summary>
     /// If <see langword="true" />, show tick labels.
     /// </summary>