feat: start implementation of recoil

package.json

src/atoms/challenge.state.ts

src/atoms/fluidState.state.ts

src/atoms/initialization.state.ts

src/atoms/notification.state.ts

src/atoms/screenTypeState.state.ts

src/atoms/userProfile.state.ts

src/components/App.jsx

src/components/ContainerComponents/Content/Content.tsx

...omponents/WelcomeModalContainer/WelcomeModalContainer.tsx

src/components/ContentComponents/Splash/SplashRoot.tsx

src/components/ContentComponents/Splash/SplashScreen.tsx

...components/ContentComponents/Splash/SplashScreenError.tsx

src/components/Routes/Routes.tsx

src/services/challenge.service.ts

src/services/initialization.service.ts

src/styles/components/_splash.scss

yarn.lock