add test script that reads user input for subprocess testing

Author: jesseduffield

test/shell_script_input_prompt.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+# For testing subprocesses that require input
+# Ask the user for login details
+read -p 'Username: ' user
+read -sp 'Password: ' pass
+echo
+echo Hello $user