Enable squeeze shell in tk_config_squeeze

# tk_config_squeeze/env/includes/app_launchers.yml
launch_squeeze_bash_shell:
  defer_keyword: ''
  engine: 'tk-shell-squeeze'
  hook_get_rez_packages: '{config}/tk-multi-launchapp/get_rez_packages.py:{config}/tk-multi-launchapp/get_rez_packages_app_specific.py'
  application_extra_rez_packages: 'python_pyside python_qtpy rez_utils' # <-- keep only rez_utils 
  hook_app_launch: '{config}/tk-multi-launchapp/app_launch.py'
  icon: '{config_path}/icons/tk_shell.png'
  linux_args: ''
  linux_path: '/usr/bin/bash'
  location: '@apps.tk-multi-launchapp.location'
  mac_args: ''
  mac_path: ''
  menu_name: Squeeze Shell
  versions: []
  windows_args: ''
  windows_path: ''