Allow you to know if the user is authenticated for the specifed connection - only implemented for iOS at the moment

function checkAuth(
	connection: Connections, 
    devID: string
): Promise<Object>
// Object takes the form {success: Boolean}

devId: string ➡ The dev-id provided to you when signing up with Terra Developer Dashboard
connection: Connections ➡ An enum to represent the connection you want to check if the user is already connected for