Create a shadowfork integration testsuite

[srdtrk]

Description

In order to better test contract upgrades, we should add a new testsuite to our shadowfork tests which does the following:

1. Upgrade the shadowforked mainnet contracts
2. Deploy another set of solidity-ibc contracts on the shadowforked mainnet
3. Pass packets between the the two (Similar to Integration2Test.t.sol)
4. Add replay tests (if we have the data of a past packet) (optional)

[linear]

IBCSOL-232 Create a shadowfork integration testsuite