Added server and client with tests

.gitignore

.prettierrc

.vscode/extensions.json

.vscode/settings.json

LICENSE

README.md

client/.babelrc

client/.flowconfig

client/.npmrc

client/flow-typed/npm/axios_v0.19.x.js

client/flow-typed/npm/enzyme_v3.x.x.js

client/flow-typed/npm/history_v4.10.x.js

client/flow-typed/npm/jest_v26.x.x.js

client/flow-typed/npm/react-dom_v16.x.x.js

client/flow-typed/npm/react-router-dom_v5.x.x.js

client/package.json

client/public/bootstrap.min.css

client/public/bootstrap.min.css.map

client/public/index.html

client/src/index.js