Add GHA to check for secrets

[ppinchuk]

And any other linting actions from super linter that may be nice to have - but we don't need any Python linting since we use Ruff.

[castelao]

@ppinchuk , I believe we don't need a workflow anymore for this, but GitHub has a standard support. Check Settings -> Advanced Security -> Secret Protection (in the bottom).

I don't have sufficient permissions in this repository to activate it.

[ppinchuk]

Oh neat, thanks for letting me know!

Do you recommend enabling "Push Protection"?

[castelao]

I've been activating "push protection", but I don't have much knowledge on that to justify.

[castelao]

What about doing a test and trying to push a fake token or password to confirm how it works?

[ppinchuk]

Oooooo yes, good idea