fix(data transport layer): Fix typescript type resolution

updates codeowners with round-robin review teams

fix(ctb): correct usage of legacy in ProxyAdmin

chore(ctb): update semver to 1.0.0

specs: system config unsafe block signer

fix(ctb): minor edit to XDM comment

fix(ctb): comment in SequencerFeeVault

feat(ctb): Forge invariant tests

fix(ctb): remove unnecessary ERC20 factory code

Corrects the usage of the legacy custom tag in the ProxyAdmin contract.
Legacy tags are meant for legacy functions that are included in a
contract in order to satisfy a previous ABI. The ProxyAdmin was using
legacy tags for things that have to do with legacy behavior.

Updates semver for all contracts in contracts-bedrock to 1.0.0.

fix(ctb): missing FeeVault comments

feat(ctb): remove unnecessary ERC721 factory code

Add the `unsafeBlockSigner` to the specs for the
`SystemConfig` contract. This was overlooked when
the `unsafeBlockSigner` was added to the contract itself.

Fixes an incomplete comment in the SequencerFeeVault that was missing a
return.

gas snapshot

feat(ctb): receivedMessages => failedMessages

Removes a legacy getter that was mistakenly added to the ERC20 factory.
We never had a getter for the bridge variable.