Feature: Configure Data Type conversion (#12374)

Co-authored-by: Elitsa Marinovska <21998037+elit0451@users.noreply.github.com>
Co-authored-by: nikolajlauridsen <nikolajlauridsen@protonmail.ch>
Co-authored-by: Elitsa Marinovska <elm@umbraco.dk>
Co-authored-by: Niels Lyngsø <niels.lyngso@gmail.com>

src/Umbraco.Core/Configuration/Models/DataTypeChangeMode.cs

@@ -0,0 +1,8 @@
+namespace Umbraco.Cms.Core.Configuration.Models;
+
+public enum DataTypeChangeMode
+{
+    True,
+    False,
+    FalseWithHelpText
+}

src/Umbraco.Core/Configuration/Models/DataTypesSettings.cs

@@ -0,0 +1,15 @@
+using System.ComponentModel;
+
+namespace Umbraco.Cms.Core.Configuration.Models;
+
+[UmbracoOptions(Constants.Configuration.ConfigDataTypes)]
+public class DataTypesSettings
+{
+    internal const DataTypeChangeMode StaticDataTypeChangeMode = DataTypeChangeMode.True;
+
+    /// <summary>
+    /// Gets or sets a value indicating if data types can be changed after they've been used.
+    /// </summary>
+    [DefaultValue(StaticDataTypeChangeMode)]
+    public DataTypeChangeMode CanBeChanged { get; set; } = StaticDataTypeChangeMode;
+}