add test to expose memory corruption

CCBUG: 432376
CCMAIL: cbc.alves@gmail.com

tests/resize-test.sh

+#!/bin/sh
+
+echo "Make sure konsole is built with 'cmake .. -DECM_ENABLE_SANITIZERS=address'"
+echo
+
+echo $(printf 'a%.0s' $(seq 1 $(($(stty size | cut -d\  -f2) - 1))))
+
+echo
+echo Now make the window smaller
+