Create new auctions

[valiafetisov]

Goal

User/developer is able to create a new auction on kovan

Context

Currently, we have a limited set of auctions that were created before by someone else. But as soon as we execute a swap transaction on one of them, it's gone forever. We need to figure this out also for the UNIV2* collaterals, as they work a bit differently and hasn't been tested yet.

Note that we also need to acquire quite a lot of kovan ETH in order to create vaults and execute many transactions. Some help from PM is required. cc @LukSteib

Tasks

• [ ] investigate whether it's actually possible to create auctions completely client-side, and then, how many transactions it will require
• [ ] figure out if it not too complicated to move this functionality into a backend, to improve UX
• [ ] implement creation

[valiafetisov]

There are two existing scripts to create auctions, but both of them are not plug-in-play:

• one from auction-demo-keeper (seems outdated) https://github.com/makerdao/auction-demo-keeper/blob/main/scripts/create-auctions.js
• one from dai.js tests (line 55 needs to be edited as well as the wallet address) https://github.com/makerdao/dai.js/blob/dev/packages/dai-plugin-liquidations/test/LiquidationService.test.js

[valiafetisov]

There is also a client-side auction creation that I attempted to write based on the script from auction-demo-keeper, but couldn't make it work: https://github.com/sidestream-tech/auction-ui/pull/173/commits/053775bd3a2a58efb88a191011f94587561f8633