Function: `GetSystemSetting`

Retrieve a Java System property or environment value by name.

It looks at properties first then environment variables second.

You can also pass a default value to return if the property or environment variable is not found.

Method Signature

GetSystemSetting(key=[String], defaultValue=[String])

Argument	Type	Required	Description	Default
`key`	`String`	`true`	The name of the system property or environment variable to retrieve
`defaultValue`	`String`	`false`	The default value to return if the property or environment variable is not found