Add Dispute Game Factory address for Base Mainnet

[cbfyi]

To support Fault Proofs w/ Base Mainnet.

I can confirm this is the correct address at the time of writing (I've been doing the testing) though we should hold off merging this PR until the Superchain Ops PR has been reviewed, and merged. EDIT: We have now verified the simulated state.

See ethereum-optimism/superchain-ops#352

Related to https://docs.base.org/docs/preparing-for-fault-proofs-on-base/

Sepolia #2519

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PR-Codex overview

This PR introduces a new Dispute Game Factory contract for the Base chain and updates the base.ts configuration to include this new contract.

Detailed summary

• Added disputeGameFactory entry to the contracts object in src/chains/definitions/base.ts.
• Specified a source ID and address for the disputeGameFactory.

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