E2E test snapshot/restore (#11564)

frontend/src/metabase/components/EntityMenuItem.jsx

frontend/test/__runner__/backend.js

frontend/test/__runner__/run_cypress_tests.js

frontend/test/__support__/cypress.js

frontend/test/cypress-snapshots.json

frontend/test/metabase/admin/people/people.cy.spec.js

frontend/test/metabase/admin/settings/settings.cy.spec.js

frontend/test/metabase/dashboard/dashboard.cy.spec.js

frontend/test/metabase/home/Overworld.cy.spec.js

frontend/test/metabase/public/signin.cy.spec.js

...nd/test/metabase/query_builder/simple-question.cy.spec.js

frontend/test/metabase/reference/databases.cy.spec.js

frontend/test/metabase/reference/guide.cy.spec.js

frontend/test/metabase/scenarios/query_builder.cy.spec.js

frontend/test/metabase/setup/signup.cy.spec.js

frontend/test/snapshot-creators/default.cy.snap.js

frontend/test/snapshots/blank.sql

frontend/test/snapshots/default.sql

package.json

src/metabase/api/routes.clj