Automate shfmt or alternately reject PR merge if not formatted for 'sh' and 'bash' code

[MikeFultonDev]

Do you need to run shfmt here?

Originally posted by @IgorTodorovskiIBM in #12 (comment)

[MikeFultonDev]

We should be running shfmt on the code in various repos.
Should we:

• automate this as part of PR merge?
• spit out a message if a shfmt would create a diff?
• other?

[MikeFultonDev]

Opinions @IgorTodorovskiIBM @fanbo-meng ?

[IgorTodorovskiIBM]

We could set up a Github Action like https://github.com/marketplace/actions/super-linter that checks for any linting errors on new PRs. Super-linter appears to support shfmt

[MikeFultonDev]

@IgorTodorovskiIBM does this one make sense for you? I'm assuming this would require 'special powers' under github?