feat(permit2-sdk): support zksync permit2 address (#37)

## Description

Zksync permit2 address is not 0x0000000000225e31d15943971f47ad3022f714fa, due to different create2 address computation in its zkevm. Updating permit2-sdk to support zksync.

## How Has This Been Tested?

Will test in SOR.

## Are there any breaking changes?

Not really, but we are soft deprecating the `PERMIT2_ADDRESS` constant.

## (Optional) Feedback Focus

No

## (Optional) Follow Ups

No

sdks/permit2-sdk/src/constants.ts

@@ -1,7 +1,17 @@
 import { BigNumber } from '@ethersproject/bignumber'
 
+// @deprecated please use permit2Address(chainId: number)
 export const PERMIT2_ADDRESS = '0x000000000022D473030F116dDEE9F6B43aC78BA3'
 
+export function permit2Address(chainId?: number): string {
+  switch (chainId) {
+    case 324:
+      return '0x0000000000225e31D15943971F47aD3022F714Fa'
+    default:
+      return PERMIT2_ADDRESS
+  }
+}
+
 export const MaxUint48 = BigNumber.from('0xffffffffffff')
 export const MaxUint160 = BigNumber.from('0xffffffffffffffffffffffffffffffffffffffff')
 export const MaxUint256 = BigNumber.from('0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff')