Removing googleAuth and googleAuthR_js support

If you are still using the deprecated with_shiny() then please depend on package googleAuthR == 1.4.1

• Removed with_shiny() and googleAuth modules that have been deprecated for a while -use gar_shiny_* instead.
• Improved error handling with custom http errors - API responses with errors will create R error conditions http_404 which can be used to more refined processing.