cli: improve flags and commands

docs: add README.md and examples
centos/rhel: fix dracut initramfs

Signed-off-by: Adphi <philippe.adrien.nousse@gmail.com>

examples/full/resize

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+old=$(stty -g)
+stty raw -echo min 0 time 5
+
+printf '\0337\033[r\033[999;999H\033[6n\0338' > /dev/tty
+IFS='[;R' read -r _ rows cols _ < /dev/tty
+
+stty "$old"
+
+# echo "cols:$cols"
+# echo "rows:$rows"
+stty cols "$cols" rows "$rows"