to do shellcheck for all shell scripts

[alex-tu-cc]

so that we can prevent issue like 379b789
It can be picked up by shellcheck

╰─>shellcheck late/scripts/chroot.sh 

In late/scripts/chroot.sh line 68:
    . /usr/share/dell/scripts/FAIL-SCRIPT
      ^-- SC1091: Not following: /usr/share/dell/scripts/FAIL-SCRIPT was not specified as input (see shellcheck -x).


In late/scripts/chroot.sh line 84:
    if ! -e "$TARGET/pts"; then
         ^-- SC2215: This flag is used as a command name. Bad line break or missing [ .. ]?

[superm1]

I think making it part of CI makes sense, yes.