Improve theme infra of BitCalendar (#13298)

src/BlazorUI/Bit.BlazorUI/Components/Inputs/Calendar/BitCalendarClassStyles.cs

@@ -12,6 +12,16 @@ public class BitCalendarClassStyles
     /// </summary>
     public string? Container { get; set; }
 
+    /// <summary>
+    /// Custom CSS classes/styles for the wrapper of the HeaderTemplate of the BitCalendar.
+    /// </summary>
+    public string? Header { get; set; }
+
+    /// <summary>
+    /// Custom CSS classes/styles for the wrapper of the FooterTemplate of the BitCalendar.
+    /// </summary>
+    public string? Footer { get; set; }
+
     /// <summary>
     /// Custom CSS classes/styles for the day-picker's wrapper of the BitCalendar.
     /// </summary>
@@ -343,7 +353,12 @@ public class BitCalendarClassStyles
     public string? YearButton { get; set; }
 
     /// <summary>
-    /// Custom CSS classes/styles for the event indicator dot of the BitCalendar.
+    /// Custom CSS classes/styles for the row of event indicator dots on a day of the BitCalendar.
+    /// </summary>
+    public string? EventIndicators { get; set; }
+
+    /// <summary>
+    /// Custom CSS classes/styles for each event indicator dot of the BitCalendar.
     /// </summary>
     public string? EventIndicator { get; set; }
 
@@ -367,6 +382,11 @@ public class BitCalendarClassStyles
     /// </summary>
     public string? EventModalCloseButton { get; set; }
 
+    /// <summary>
+    /// Custom CSS classes/styles for the list of events in the event modal of the BitCalendar.
+    /// </summary>
+    public string? EventList { get; set; }
+
     /// <summary>
     /// Custom CSS classes/styles for each event item in the event modal of the BitCalendar.
     /// </summary>

src/BlazorUI/Bit.BlazorUI/Components/Inputs/Calendar/BitCalendarEvent.cs

@@ -20,6 +20,12 @@ public class BitCalendarEvent
     /// </summary>
     public DateOnly Date { get; set; }
 
+    /// <summary>
+    /// The color of the indicator dot the event puts on its day. Without one the dot takes the color of the
+    /// calendar itself, so a calendar whose events are all of a kind needs to say nothing here.
+    /// </summary>
+    public BitColor? Color { get; set; }
+
     /// <summary>
     /// The optional start time of the event.
     /// </summary>