chore: remove opcm

[jackchuma]

Summary

• Remove the OPContractsManager (OPCM) and OPContractsManagerStandardValidator production contracts, their interfaces, ABI/storage snapshots, and the dedicated opcm-upgrade-checks script.
• Introduce scripts/deploy/SystemDeploy.s.sol, a single script that inlines and simplifies the full system deploy + upgrade logic that previously lived inside OPCM.
• Inline and simplify deployment and upgrade logic in DeployImplementations, Deploy, and DeployOPChain so the scripts no longer rely on OPCM as an intermediary.
• Extract OPCM-owned types into scripts/libraries/Types.sol so callers consume them directly from script types.
• Replace the onchain standard validator with test/setup/StandardSystemAssertions.sol, a test-only assertion harness, and update ForkLive/Setup accordingly.
• Move OPCM-era deploy tests (DeployImplementations.t.sol, DeployOPChain.t.sol, DeploySuperchain.t.sol) from test/opcm/ to test/deploy/ and add test/deploy/SystemDeploy.t.sol.
• Clean up supporting tooling: drop OPCM entries from foundry.toml, the justfile, scripts/checks/interfaces, and scripts/checks/test-validation/exclusions.toml; refresh snapshots accordingly.

[cb-heimdall]

✅ Heimdall Review Status

Requirement	Status	More Info
Reviews	✅ 1/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 2 if repo is sensitive 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1