Updated FE models

Author: FrostyApeOne

src/GovUK.Dfe.CoreLibs.Contracts/ExternalApplications/Models/Request/SetTemplateLiveRequest.cs

@@ -0,0 +1,15 @@
+using System.Text.Json.Serialization;
+
+namespace GovUK.Dfe.CoreLibs.Contracts.ExternalApplications.Models.Request;
+
+/// <summary>
+/// Request to set whether a template is live for end users in the current tenant.
+/// </summary>
+public class SetTemplateLiveRequest
+{
+    /// <summary>
+    /// When <c>true</c>, the template is available to end users who have permission.
+    /// </summary>
+    [JsonPropertyName("isLive")]
+    public bool IsLive { get; set; }
+}

src/GovUK.Dfe.CoreLibs.Contracts/ExternalApplications/Models/Response/TemplateDto.cs

@@ -18,4 +18,11 @@ public class TemplateDto
 
     [JsonPropertyName("latestVersionNumber")]
     public string? LatestVersionNumber { get; set; }
+
+    /// <summary>
+    /// When <c>true</c>, end users with permission can access this template.
+    /// Admins receive all catalogue templates and can use this flag for publish/preview UX.
+    /// </summary>
+    [JsonPropertyName("isLive")]
+    public bool IsLive { get; set; }
 }