Add ability to sort and filter activity log entries (#15583)

Jellyfin.Data/Enums/ActivityLogSortBy.cs

@@ -0,0 +1,49 @@
+namespace Jellyfin.Data.Enums;
+
+/// <summary>
+/// Activity log sorting options.
+/// </summary>
+public enum ActivityLogSortBy
+{
+    /// <summary>
+    /// Sort by name.
+    /// </summary>
+    Name = 0,
+
+    /// <summary>
+    /// Sort by overview.
+    /// </summary>
+    Overiew = 1,
+
+    /// <summary>
+    /// Sort by short overview.
+    /// </summary>
+    ShortOverview = 2,
+
+    /// <summary>
+    /// Sort by type.
+    /// </summary>
+    Type = 3,
+
+    /*
+    /// <summary>
+    /// Sort by item name.
+    /// </summary>
+    Item = 4,
+    */
+
+    /// <summary>
+    /// Sort by date.
+    /// </summary>
+    DateCreated = 5,
+
+    /// <summary>
+    /// Sort by username.
+    /// </summary>
+    Username = 6,
+
+    /// <summary>
+    /// Sort by severity.
+    /// </summary>
+    LogSeverity = 7
+}