Guide users in case of misspelled commands or options

When we get an unrecognized command or option, search one with a similar name and show it to the user.
Here is an example from a test:

```
elm-fullstack run-server  --remove-previous-process
```

This command-line now leads to the following output:
```
Specify --help for a list of available options and commands.

Unrecognized option '--remove-previous-process'

Did you mean 'delete-previous-process'?
```

implement/PersistentProcess/PersistentProcess.WebHost/Program.cs

@@ -2,6 +2,6 @@ namespace Kalmit.PersistentProcess.WebHost
 {
     public class Program
     {
-        static public string AppVersionId => "2020-05-27";
+        static public string AppVersionId => "2020-05-28";
     }
 }

implement/elm-fullstack/Program.cs

@@ -347,7 +347,44 @@ CommandOption verboseLogOptionFromCommand(CommandLineApplication command) =>
                 return 1;
             });
 
-            return app.Execute(args);
+            int executeAndGuideInCaseOfException()
+            {
+                try
+                {
+                    return app.Execute(args);
+                }
+                catch (CommandParsingException ex)
+                {
+                    DotNetConsoleWriteProblemCausingAbort(ex.Message);
+
+                    if (ex is UnrecognizedCommandParsingException uex && uex.NearestMatches.Any())
+                    {
+                        DotNetConsoleWriteProblemCausingAbort("\nDid you mean '" + uex.NearestMatches.FirstOrDefault() + "'?");
+                    }
+
+                    return 430;
+                }
+            }
+
+            return executeAndGuideInCaseOfException();
+        }
+
+        static public void DotNetConsoleWriteLineUsingColor(string line, ConsoleColor color)
+        {
+            var colorBefore = Console.ForegroundColor;
+
+            Console.ForegroundColor = color;
+
+            Console.WriteLine(line);
+
+            Console.ForegroundColor = colorBefore;
+        }
+
+        static public void DotNetConsoleWriteProblemCausingAbort(string line)
+        {
+            Console.WriteLine("");
+
+            DotNetConsoleWriteLineUsingColor(line, ConsoleColor.Yellow);
         }
 
         public class DeployAppReport

implement/elm-fullstack/elm-fullstack.csproj

@@ -5,8 +5,8 @@
     <TargetFramework>netcoreapp3.1</TargetFramework>
     <RootNamespace>elm_fullstack</RootNamespace>
     <AssemblyName>elm-fullstack</AssemblyName>
-    <AssemblyVersion>2020.0527.0.0</AssemblyVersion>
-    <FileVersion>2020.0527.0.0</FileVersion>
+    <AssemblyVersion>2020.0528.0.0</AssemblyVersion>
+    <FileVersion>2020.0528.0.0</FileVersion>
   </PropertyGroup>
 
   <PropertyGroup>