* sdk: decouple from contracts-bedrock

Decouples the sdk from `contracts-bedrock` to enable
it to easily be moved out of the monorepo.

The foundry artifacts are build from 3fc229e3 and then
copy/pasted into the sdk. There are no large breaking changes
planned which is why this is safe to do. This sdk has already
been replaced by viem and in the future a Go sdk can be broken
out of the `op-e2e` package to serve as the reference implementation
of a sdk.

The typescript sdk will be subject to just work until new breaking
changes are introduced but at that point we should have sufficient
migration to the alternative solutions.

* sdk: remove dead dep

* deps: fix pnpm lock