by default, getApplicationSettings() returns all the values in the this scope from the Application.cfc constructor

• firstly, it adds all the supported setting from the application

• then it adds any other keys which weren’t set from step 1

Add a onlySupported argument which optionally skips (unsupported) values step 2

This is useful to check if you have misconfigured (typos) in your application settings which aren’t being picked up and used by Lucee

i.e. https://github.com/lucee/Lucee/blob/6.0/test/functions/getApplicationSettings/unSupported.cfm

i.e. a typo like this.datasoures would be ignored by Lucee, but still returned by getApplicationSettings()