[FEATURE] Adding opportunity to check hidden folder

[ylazakovich]

What would you like to change about the program?
Your entrypoint.sh uses

shopt -s globstar

I would suggesting to add global option with default value

-s globstar

but for me I need execute

shopt -s globstar dotglob

Why do you think this is a cool idea?
As result if I run your action I will be able to check all workflows in .github/workflows/*.yml

For instance

With '	Without '

If define

prettier_options: --check --ignore-unknown '**/*.{yml}'

• action will return error about wrong command
  

[creyD]

@ylazakovich You may introduce this variable as an additional option, I will merge the PR :)