Introduce silent execution method for ExternalCommandExecutor.

Author: cotti

src/tooling/Elastic.Documentation.Tooling/ExternalCommands/ExternalCommandExecutor.cs

@@ -24,6 +24,19 @@ protected void ExecIn(Dictionary<string, string> environmentVars, string binary,
 			collector.EmitError("", $"Exit code: {result} while executing {binary} {string.Join(" ", args)} in {workingDirectory}");
 	}
 
+	protected void ExecInSilent(Dictionary<string, string> environmentVars, string binary, params string[] args)
+	{
+		var arguments = new StartArguments(binary, args)
+		{
+			Environment = environmentVars,
+			WorkingDirectory = workingDirectory.FullName,
+			ConsoleOutWriter = NoopConsoleWriter.Instance
+		};
+		var result = Proc.Start(arguments);
+		if (result.ExitCode != 0)
+			collector.EmitError("", $"Exit code: {result.ExitCode} while executing {binary} {string.Join(" ", args)} in {workingDirectory}");
+	}
+
 	protected string[] CaptureMultiple(string binary, params string[] args)
 	{
 		// Try 10 times to capture the output of the command, if it fails, we'll throw an exception on the last try

src/tooling/docs-builder/Tracking/LocalGitRepositoryTracker.cs

@@ -18,9 +18,9 @@ public IEnumerable<GitChange> GetChangedFiles(string lookupPath)
 		var defaultBranch = GetDefaultBranch();
 		var commitChanges = CaptureMultiple("git", "diff", "--name-status", $"{defaultBranch}...HEAD", "--", $"./{lookupPath}");
 		var localChanges = CaptureMultiple("git", "status", "--porcelain");
-		_ = Capture("git", "stash", "push", "--", $"./{lookupPath}");
+		ExecInSilent([], "git", "stash", "push", "--", $"./{lookupPath}");
 		var localUnstagedChanges = CaptureMultiple("git", "stash", "show", "--name-status", "-u");
-		_ = Capture("git", "stash", "pop");
+		ExecInSilent([], "git", "stash", "pop");
 
 		return [.. GetCommitChanges(commitChanges), .. GetLocalChanges(localChanges), .. GetCommitChanges(localUnstagedChanges)];
 	}