Refactor code structure for improved readability and maintainability; optimize performance in key functions.

src/Cli/StellaOps.Cli/Services/ITrustPolicyLoader.cs

@@ -0,0 +1,8 @@
+using StellaOps.Cli.Services.Models;
+
+namespace StellaOps.Cli.Services;
+
+public interface ITrustPolicyLoader
+{
+    Task<TrustPolicyContext> LoadAsync(string path, CancellationToken cancellationToken = default);
+}