Feature/xyield erc 4626 withdraw

[evchip]

Description

xYieldVault.sol

• replace updateTotals params with struct
• add withdrawFrom method for remote withdrawals
• change updateBalances implementation to support burning or minting tokens
• add fork test for remoteWithdraw method

Motivation and Context

Facilitate same chain withdrawals. Remote withdrawals are partially implemented, but will need bridging capabilities to be fully functional. We are parking this for the time being.

How Has This Been Tested?

Added fork and unit tests

Types of changes (remove all unchecked types)

• New feature (non-breaking change which adds functionality)

Checklist:

• If my change requires a change to the documentation, I have updated the documentation accordingly, and in either case, have checked this box to attest to my assessment of this requirement with regard to my change.
• If my change requires additions or updates to any deployment scripts to ensure that the protocol is functional (Makefile, Dockerfile, Forge Script, etc.), I have made these changes, and in either case, have checked this box to attest to my assessment of this requirement with regard to my change.
• If my change requires additional test coverage, I have created those tests accordingly, and in either case, have checked this box to attest to my assessment of this requirement with regard to my change.

[aharvet]

LGTM