Initialize the gdpr-guard logic from the DOM or the provided {@link GdprSavior}
throws
{NoManagerDefinitionError} - If no manager definition can be found
(either {@link gdprEl} is undefined or document.querySelector("[data-gdpr]") returned null)
Parameters
gdprSavior: GdprSavior
The savior to use to restore and save the {@link GdprManager} data
Initialize the gdpr-guard logic from the DOM or the provided {@link GdprSavior}
{NoManagerDefinitionError} - If no manager definition can be found (either {@link gdprEl} is
undefined
ordocument.querySelector("[data-gdpr]")
returnednull
)