* add @cypress/schematic as a dev dependency
* replace protractor with cypress
* remove the boilerplate test
* add the cypress-wait-until helper library
* add cypress-wait-until to all tests
* add signet to stg proxy config
* add proxy config for production
* add environment configs to angular.json
* update e2e target to use the production proxy
* update serve and start scripts to use the new environment config
* add the concurrently lib to the dev dependencies
* fix missing import
* ignore videos and screenshots saved by the e2e suite
* add fixtures for the tests
* update cypress npm scripts to use concurrently
* add some e2e tests
