Add XML docs

RemoteExec.Server/Configuration/ApiKeyConfiguration.cs

@@ -1,8 +1,23 @@
 namespace RemoteExec.Server.Configuration;
 
+/// <summary>
+/// Represents an individual API key configuration.
+/// </summary>
 public class ApiKeyConfiguration
 {
+    /// <summary>
+    /// Gets or sets the API key value.
+    /// </summary>
     public required string Key { get; set; }
+
+    /// <summary>
+    /// Gets or sets an optional description of the API key.
+    /// </summary>
     public string? Description { get; set; }
+
+    /// <summary>
+    /// Gets or sets whether this API key is enabled.
+    /// Default is true.
+    /// </summary>
     public bool Enabled { get; set; } = true;
 }