Feat: Signin and signout

digital-course-file/.gitignore

digital-course-file/README.md

digital-course-file/package-lock.json

digital-course-file/package.json

digital-course-file/public/favicon.ico

digital-course-file/public/index.html

digital-course-file/public/logo192.png

digital-course-file/public/logo512.png

digital-course-file/public/manifest.json

digital-course-file/public/robots.txt

digital-course-file/src/App.css

digital-course-file/src/App.js

digital-course-file/src/App.test.js

digital-course-file/src/Routes.js

digital-course-file/src/core/Home.js

digital-course-file/src/fire.js

digital-course-file/src/index.css

digital-course-file/src/index.js

digital-course-file/src/logo.svg

digital-course-file/src/reportWebVitals.js