* feat: add L2 standrad bridge interop contract

* test: add L2 standard bridge interop unit tests (#13)

* test: add L2 standard bridge interop unit tests

* fix: add tests natspec

* fix: unit tests fixes

* fix: super to legacy tests failing

* fix: mock and expect mint and burn

* fix: add generic factory interface (#14)

* test: add L2 standard bridge interop unit tests

* fix: add tests natspec

* fix: add generic factory interface

* feat: modify OptimismMintableERC20Factory for convert (#17)

* test: add L2 standard bridge interop unit tests

* fix: add tests natspec

* fix: add generic factory interface

* feat: modify OptimismMintableERC20Factory for convert

* fix: use only a public function for create3

* feat: rollback interop factory, modify legacy one

* fix: delete local token return variable

* fix: PR fixes

* test: fix address assuming

* test: fix view warning

* fix: snapshots

* test: small fixes