Added view attribute to ICallProxy IDeBridgeGate interfaces

DeBridgeGate 4.2.1

• removed flash loan logic

• removed defi controller logic

• added permit amount to permitEnvelope

• override executionFee if it more then amountAfterFee

• new sendMessage() methods to simplify message passing

• CallProxy now disallows calls to EOAs effectively marking such external calls as invalid. This bug may cause asset loss if a call is made to wrong address

• all core contracts/interfaces/libraries now support Solidity versions v0.8.7+ (^0.8.7) rather then strictly requiring v0.8.7

• IDeBridgeGate now provides getters to callProxy, globalFixedNativeFee and globalTransferFeeBps props

• disable initialize implementationconstructor() initializer

Constracts for upgrade
-contracts/transfers/DeBridgeGate.sol
-contracts/periphery/CallProxy.sol

DeBridgeGate 4.1.0

Merge pull request #205 from merrymari/patch-2

Update LICENSE