UI - Updated Fluent Avalonia and made the titlebar work well on Linux

src/Artemis.Core/Models/Profile/Profile.cs

@@ -47,7 +47,6 @@ namespace Artemis.Core
         /// </summary>
         public List<ScriptConfiguration> ScriptConfigurations { get; }
 
-
         /// <summary>
         ///     Gets or sets a boolean indicating whether this profile is freshly imported i.e. no changes have been made to it
         ///     since import

src/Artemis.Core/Models/Profile/ProfileElement.cs

@@ -130,6 +130,16 @@ namespace Artemis.Core
         /// </summary>
         public event EventHandler<ProfileElementEventArgs>? ChildRemoved;
 
+        /// <summary>
+        ///     Occurs when a child was added to the <see cref="Children" /> list of this element or any of it's descendents.
+        /// </summary>
+        public event EventHandler<ProfileElementEventArgs>? DescendentAdded;
+
+        /// <summary>
+        ///     Occurs when a child was removed from the <see cref="Children" /> list of this element or any of it's descendents.
+        /// </summary>
+        public event EventHandler<ProfileElementEventArgs>? DescendentRemoved;
+
         /// <summary>
         ///     Invokes the <see cref="ChildAdded" /> event
         /// </summary>
@@ -146,6 +156,24 @@ namespace Artemis.Core
             ChildRemoved?.Invoke(this, new ProfileElementEventArgs(child));
         }
 
+        /// <summary>
+        ///     Invokes the <see cref="DescendentAdded" /> event
+        /// </summary>
+        protected virtual void OnDescendentAdded(ProfileElement child)
+        {
+            DescendentAdded?.Invoke(this, new ProfileElementEventArgs(child));
+            Parent?.OnDescendentAdded(child);
+        }
+
+        /// <summary>
+        ///     Invokes the <see cref="DescendentRemoved" /> event
+        /// </summary>
+        protected virtual void OnDescendentRemoved(ProfileElement child)
+        {
+            DescendentRemoved?.Invoke(this, new ProfileElementEventArgs(child));
+            Parent?.OnDescendentRemoved(child);
+        }
+
         /// <summary>
         ///     Disposes the profile element
         /// </summary>
@@ -200,6 +228,7 @@ namespace Artemis.Core
             }
 
             OnChildAdded(child);
+            OnDescendentAdded(child);
         }
 
         /// <summary>
@@ -220,6 +249,7 @@ namespace Artemis.Core
             }
 
             OnChildRemoved(child);
+            OnDescendentRemoved(child);
         }
 
         private void StreamlineOrder()