checkAuth, useAuth() (login using: Netlify, Auth0, Firebase)

[jozef-slezak]

let's have some pages that require authentication using Netlify, Auth0 and Firebase:

vid. web-akular AuthProvider (abstrakcia nad Firebase, Auth0, Keycloack)

• useAuth() https://github.com/Swizec/useAuth,
• netlify and Auth0 https://useauth.dev/docs/netlify-identity/
• firebase https://usehooks.com/useAuth/
• https://auth0.com/blog/complete-guide-to-react-user-authentication/
• react checkAuth https://ui.dev/react-router-v5-philosophy-introduction/
• show / hide one menu item
• show another menu iterm display login on another protected router