refactoring (#116)

- refactoring architecture
- fix incomplete ssh logs
- code editor for scripts in the app
- remove Jobs and SSHCommands

app/Exceptions/ServiceInstallationFailed.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace App\Exceptions;
+
+use Exception;
+
+class ServiceInstallationFailed extends Exception
+{
+    //
+}