Use parseEnv on reCAPTCHA key fields in settings

[danbrellis]

What are you trying to do?

To enter in the reCAPTCHA site and secret keys via the control panel one would have to enter in the value which is stored in config/project/project.yaml and subsequently committed.

These fields should allow users to enter in an ENV variable, similar to how Craft allows in settings/email.

What's your proposed solution?

Enable craft\helpers\App::parseEnv() on the two reCAPTCHA fields to allow env vars to be entered via the control panel.

Additional context

See https://craftcms.com/docs/3.x/extend/environmental-settings.html

The work-around is to override this setting with the use of config/comments.php.

[Josh Crawford]

Also added the ability to set these as .env variables. To get this early, change your verbb/comments requirement in composer.json to:

"require": {
  "verbb/comments": "dev-craft-3 as 1.9.3",
  "...": "..."
}

Then run composer update.

[Josh Crawford]

Added in 1.9.4