Update the onboarding process and separate tabs for lender and borrower

[yukiwaki]

waiting for UI

[yukiwaki]

1. Show the popup to ask if they are "borrower" or "lender"
   it should be only shown one time per user, by using local storage
   https://www.figma.com/file/wNqDjrKak29VQV2UZHIMQo/Loanyee-UI?node-id=2170%3A5548

2. separate tabs for lender and borrower
   lend : https://app.loanyee.xyz
   borrow : https://app.loanyee.xyz/borrow
   https://www.figma.com/file/wNqDjrKak29VQV2UZHIMQo/Loanyee-UI?node-id=5%3A4193