Add script to generate CLI help list

Thanks @pleskan

src/hst_generate_clidocs.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+for file in /usr/local/hestia/bin/*; do
+        echo "$file" >> ~/hestia_cli_help.txt
+        [ -f "$file" ] && [ -x "$file" ] && "$file" >> ~/hestia_cli_help.txt
+done;
+
+sed -i 's\/usr/local/hestia/bin/\\' ~/hestia_cli_help.txt