Update Bidding with DAI the amount to receive logic

[valiafetisov]

Goal

Fixed amount to receive indication in the BidTransactionTable

Context

After executing first Bid with DAI transaction, we realised that the user doesn't receive the whole amount of collateral. More info here: #163 (comment). Based on this, we need to:

• Create new core function which will calculate actual amount to receive based on the input value
• Add store logic to fetch collateral in the VAT
• Add store logic to withdraw collateral from VAT to Wallet

Tasks

• Implement all the above
• Provide testing commands in the PR description