Added a Send to menu to every chat message and kept restrictions when sending content on (#1124)

app/MindWork AI Studio/Components/MenuDefaults.cs

@@ -0,0 +1,18 @@
+namespace AIStudio.Components;
+
+/// <summary>
+/// Settings every menu of AI Studio shares.
+/// </summary>
+public static class MenuDefaults
+{
+    /// <summary>
+    /// The height in pixels above which a menu scrolls.
+    /// </summary>
+    /// <remarks>
+    /// MudBlazor keeps a MudSelect inside the window by itself, but never a MudMenu: a menu runs past the
+    /// edge of the window, and its lower entries cannot be reached. A menu whose entries come from data, such
+    /// as the assistants or the profiles, therefore sets MaxHeight to this value. It is the height MudBlazor
+    /// gives a MudSelect, so both look alike.
+    /// </remarks>
+    public const int MAX_HEIGHT = 300;
+}