Add project files.

Framework/Core/Configurations/ConfigurationWriter.cs

@@ -0,0 +1,28 @@
+using Microsoft.Extensions.Configuration;
+
+namespace TheXamlGuy.Framework.Core
+{
+    public class ConfigurationWriter<TConfiguration> : IConfigurationWriter<TConfiguration> where TConfiguration : class, new()
+    {
+        private readonly IConfiguration rootConfiguration;
+
+        public ConfigurationWriter(IConfiguration rootConfiguration)
+        {
+            this.rootConfiguration = rootConfiguration;
+        }
+
+        public void Write(string section, TConfiguration configuration)
+        {
+            if (rootConfiguration is IConfigurationRoot root)
+            {
+                foreach (IConfigurationProvider? provider in root.Providers)
+                {
+                    if (provider is IWritableConfigurationProvider writableConfigurationProvider)
+                    {
+                        writableConfigurationProvider.Write(section, configuration);
+                    }
+                }
+            }
+        }
+    }
+}