Begin Oauth for front

backend/utils/oauth.js

front/package.json

front/src/App.js

front/src/view/FormToucan.js

front/src/view/Login.js

front/src/view/mainPage.js

front/src/view/showToucan/ModalSuppression.js

front/src/view/showToucan/ToucanLine.js

front/src/view/showToucan/ToucanTable.js

front/yarn.lock