add getter for the command

src/de/uni_passau/fim/seibt/gitwrapper/process/ToolWrapper.java

@@ -32,6 +32,15 @@ public abstract class ToolWrapper {
         }
     }
 
+    /**
+     * Returns the command represented by this {@link ToolWrapper}.
+     *
+     * @return the command
+     */
+    public String getCmd() {
+        return cmd;
+    }
+
     /**
      * Determines whether the wrapped command is working as expected. This method is called by the
      * {@link #ToolWrapper(String)} constructor after the {@link #cmd} variable is initialized. Subclasses may use the