* op-challenger: Refactor cannon trace provider

Move gzip method to ioutil

* op-challenger: Expose cannon tracer methods

* op-challenger: asterisc implementation

Basic unit tests mirrored from cannon.

* op-challenger: asterisc flags and configs

* op-challenger: asterisc metric helper

* op-challenger: asterisc registration and add types

* op-dispute-mon: enable asterisc type

* Fix typo

* Fix l2RPC when registering asterisc

* Deduplicate preimageOpts for testing

* Fix comments

* Style issue fix

* Deduplicate network flag for testing

* Remove redundant prefix at filename

* Add config test for using both cannon and asterisc

* Refactor asterisc/cannon provider using utils

* Remove redundant prefix at filename

* Fix comments

* Style issue fix

* Refactor asterisc/cannon provider using utils

* Remove unused methods

* op-challenger: add l2-rpc flag and deprecate cannon-l2 flag