Eval server setup

[shinpads]

What was added

• Express server with /test endoint
• Add option to pass in cdp_url

Why this is necessary

• Express server needed as an interface to run evals on
• cdp_url needed to run tests on our simulated browser environments

[changeset-bot]

⚠️ No Changeset found

Latest commit: 0b30a51

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[kamath]

marking draft until ready