Auth: create a function to check session in the client.

[alfonsusac]

• [x] create session() function in /lib/session.js
• [x] read and retrieve cookies and localstorage

Cookie key: "token" Payload key in localstorage: "user"

• [x] Read cookie from js-cookie

This function is client-side only.

You may test (but you don't need to):

useEffect(()=>{
  console.log(session())
},[])