refactor: Fetch logs from buffer to display plugin output in pact tests

Author: max-lancaster

src/PactNet/Drivers/MockServerDriver.cs

@@ -53,12 +53,9 @@ public string MockServerMismatches()
         /// <returns>Log string</returns>
         public string MockServerLogs()
         {
-            IntPtr logsPtr = NativeInterop.MockServerLogs(this.Port);
-
-            return logsPtr == IntPtr.Zero
-                       ? "ERROR: Unable to retrieve mock server logs"
-                       : Marshal.PtrToStringAnsi(logsPtr);
+            return NativeInterop.FetchLogBuffer(null);
         }
+
         /// <summary>
         /// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
         /// </summary>

src/PactNet/Interop/NativeInterop.cs

@@ -21,9 +21,6 @@ internal static class NativeInterop
         [DllImport(DllName, EntryPoint = "pactffi_mock_server_mismatches")]
         public static extern IntPtr MockServerMismatches(int mockServerPort);
 
-        [DllImport(DllName, EntryPoint = "pactffi_mock_server_logs")]
-        public static extern IntPtr MockServerLogs(int mockServerPort);
-
         [DllImport(DllName, EntryPoint = "pactffi_cleanup_mock_server")]
         public static extern bool CleanupMockServer(int mockServerPort);