Deploy and configure trustee fee collection

[franckc]

Deploy script 13 to deploy VaultCore that implements the trustee fees and to configure the trustee fee and address

• address is for now the multi-sig strategist at 0xF14BBdf064E3F67f51cd9BD646aE3716aD938FDC
• fee is set to 10%

Also added a helper hardhat task for artificially generating yield on the vault - handy for testing.

I tested on the fork that the trustee account gets yield upon a rebase, using the following sequence:

FORK=true npx hardhat yield --network localhost
FORK=true npx hardhat balance --account 0xF14BBdf064E3F67f51cd9BD646aE3716aD938FDC --network localhost
FORK=true npx hardhat rebase --network localhost
FORK=true npx hardhat balance --account 0xF14BBdf064E3F67f51cd9BD646aE3716aD938FDC --network localhost

[franckc]

We missed including VaultCore upgrade in deploy-012 so I will add it to this PR... @tomlinton please hold on reviewing this PR. it is not ready.

[franckc]

@tomlinton @DanielVF This is now ready for review... Thanks :)