the api part of the application (NodeJs/ExpressJs) gonna be in tic-tac-toe-api
the front part (ReactJs) is in tic-tac-toe-front

to run the the the backend part:
"cd tic-tac-toe-api"
"npm install"
"npm run serve" # node && npm should be installed

to run the the the frontend part:
"cd tic-tac-toe-front"
"npm install" or "yarn"
"yarn start" or "npm start"