fix: swaparoo failed to deploy due to missing config.options.swaparooCommittee

[dckc]

symptoms were: no swaparoo in published.agoricNames.instance.

Diagnosis:

agd-1  | 2024-03-19T21:48:56.868Z SwingSet: vat: v1: CORE_EVAL failed: (TypeError#3)
agd-1  | 2024-03-19T21:48:56.868Z SwingSet: vat: v1: TypeError#3: startMyCommittee: cannot coerce undefined to object
agd-1  | 2024-03-19T21:48:56.868Z SwingSet: vat: v1: TypeError: startMyCommittee: cannot coerce undefined to object
agd-1  |  at startMyCommittee (#9254:290)
agd-1  |  at startMyCommittee (#9254:277)
agd-1  |  at main (#9254:475)
agd-1  |  at ()

treatment: supply swaparooCommittee options using a new rollup plugin

[dckc]

Here's hoping we can use the e2e-tools.js to test contract functionality in end-to-end mode.

• testing API to extend ava functional tests to end-to-end context agoric-sdk#8963

meanwhile... the curl test that looks for swaparoo was good enough to find this one.

[LuqiPan]

Add a grep for swaparoo to https://github.com/Agoric/dapp-agoric-basics/blob/main/.github/workflows/pr.yml#L65-L66 too?

Otherwise LGTM