2.3.0 upgrade tests + migration script

[zajck]

Before upgrading from v2.2.1 to v2.3.0 we need to make sure the upgrade does not corrupt the protocol.

Current diff: https://github.com/bosonprotocol/boson-protocol-contracts/compare/v2.2.1..main
Some of the tests below are referring to the changes that are not merged yet: https://github.com/bosonprotocol/boson-protocol-contracts/pulls?q=is%3Apr+is%3Aopen+label%3Av2.3.0

Breaking changes

• Cannot create a seller with non-zero clerk [seller/DR]
• Cannot update a seller to non-zero clerk [seller/DR]
• If there is a pending update with a non-zero clerk, it's not possible to opt-in and confirm a new clerk [seller/DR]
• For the existing seller and DR accounts, getters return address 0 for the clerk
• It's possible to create a new account that uses the same address as some old clerk address (if not prevented by other uniqueness checks) [seller/DR]
• Withdraw funds can be called by the assistant instead of the clerk [seller/DR]
• unpausing individual regions
• Create an offer with a collection
• clone voucher with create2

New methods

• Set and get a minimal resolution period
• New sellers can create new collections
• Old sellers can create new collections. Their primary collections are unaffected
• getSellersCollections
• it's possible to create a group with new token gating
• old gate offers work ok with new token gating
• protocol limits are not enforced anymore
• getAvailableFunds,getAllAvailableFunds,getTokenListPaginated,getTokenList
• getPausedRegions

Bug fixes

• BosonVucher.tokenURI reverts if tokenId does not exist
• BosonVucher.callExternalContract returns whatever External contract returned
• If twin transfer fails, always raise a dispute (no revoke if the caller is EOA)
• If a twin is transferred it could be used in a new twin.
• cannot make an offer with too short resolution period
• pending auth token during updateSeller call
• twins cannot consume all gas during the transfer anymore
• it's possible to commit to offer at last offer validity time

New storage slots without getters

• ProtocolLookups.additionalCollections
• ProtocolLookups.rangeIdByTwin
• ProtocolLimits.minResolutionPeriod

Migration script ToDo

• Pause seller facet
• Get info about the existing sellers and the creators (via logs)
• Prepare data to backfill the sellers
• add/remove correct metatx method
• Unpause everything (include twins)