Add option to suppress bypass error logging

Updating title, actually going through the code there is nothing else to suppress other than bypass error logging. Will similarly make the field names and labels reflect that.

Similarly I do not think its a huge ask for a site builder to specify the domains to restrict suppressing the error message for. Leaving blank for all means a config override can be added like the below to settings.local.php for local development for example.

$config['cloudflare.settings']['suppress_bypass_errors'] = TRUE;

Similarly could be wrapped in a more dynamic statement to have it bypassed on non-live hosts that automatically spin up environments like using PANTHEON_ENVIRONMENT for instance.

Here are the form inputs shown in the attached MR. The hostnames is conditional (form #states) on the suppress checkbox being checked.

The last commit is a re-roll for 2.0.x - merged 2.0.x and fixed conflicts. Pls ignore the other previous ones showing here, they are wrong, I've done a force reset, so the MR on git is ok and only showing my merge/fix conflicts commit.