(maint) Add ability for Agent debugging

Chocolatey Agent adds `--run-actual` on every Chocolatey CLI command
run. When we're in debug mode and `--run-actual` is passed to Chocolatey
CLI, we should not pause execution as the end as we're likely in agent
and cannot acknowledge the pause.

This also adds a change to the cake recipe to add `--run-actual` on the
`unpackself` step as when we're building a debug version we don't want
to pause for the user to press a key.

recipe.cake

@@ -156,7 +156,7 @@ Task("Prepare-Chocolatey-Packages")
     // Run Chocolatey Unpackself
     CopyFile(BuildParameters.Paths.Directories.PublishedApplications + "/choco_merged/choco.exe", BuildParameters.Paths.Directories.ChocolateyNuspecDirectory + "/tools/chocolateyInstall/choco.exe");
 
-    StartProcess(BuildParameters.Paths.Directories.ChocolateyNuspecDirectory + "/tools/chocolateyInstall/choco.exe", new ProcessSettings{ Arguments = "unpackself -f -y --allow-unofficial-build" });
+    StartProcess(BuildParameters.Paths.Directories.ChocolateyNuspecDirectory + "/tools/chocolateyInstall/choco.exe", new ProcessSettings{ Arguments = "unpackself -f -y --allow-unofficial-build --run-actual" });
 
     // Tidy up logs and config folder which are not required
     var logsDirectory = BuildParameters.Paths.Directories.ChocolateyNuspecDirectory + "/tools/chocolateyInstall/logs";

src/chocolatey.console/Program.cs

@@ -191,7 +191,12 @@ private static void Main(string[] args)
 #if DEBUG
                 "chocolatey".Log().Info(() => "Exiting with {0}".FormatWith(Environment.ExitCode));
 #endif
-                PauseIfDebug();
+                // Chocolatey Agent runs Chocolatey CLI with --run-actual. If that's the case we don't want to pause on debug.
+                if (!args.Any(a => a.IsEqualTo("--run-actual")))
+                {
+                    PauseIfDebug();
+                }
+
                 Bootstrap.Shutdown();
                 Environment.Exit(Environment.ExitCode);
             }