perf measurement for Fast USDC in multichain-testing (#10857)

closes: #10595

## Description

  - within `advanceAndSettleScenario`, measure from start of OCW submission to receipt of advanced funds
    - multichain-testing env using `console.timeLog()` 
    - mainnet estimate using blocks elapsed * 7 sec
  - refine oracle submission to return without waiting for payouts

### Security / Scaling / Documentation / Upgrade Considerations

n/a - test code only

### Testing Considerations

Perf measurement does *not* include time between when the user says "go" and when the OCWs notice the transaction in a block and start to submit. Presumably this is around 5sec - 10 sec; the test pads timing to accommodate for such things (`MARGIN_OF_ERROR = 0.2`).

multichain-testing/scripts/fast-usdc-tool.ts

@@ -8,7 +8,6 @@ import type { ExecutionContext } from 'ava';
 import { encodeAddressHook } from '@agoric/cosmic-proto/address-hooks.js';
 import { AmountMath, type Brand } from '@agoric/ertp';
 import type { USDCProposalShapes } from '@agoric/fast-usdc/src/pool-share-math.js';
-import type { PoolMetrics } from '@agoric/fast-usdc/src/types.js';
 import { divideBy } from '@agoric/zoe/src/contractSupport/ratio.js';
 import { makeDenomTools } from '../tools/asset-info.js';
 import { makeDoOffer } from '../tools/e2e-tools.js';
@@ -17,6 +16,7 @@ import {
   makeFeedPolicyPartial,
   oracleMnemonics,
 } from '../test/fast-usdc/config.js';
+import { agoricNamesQ, fastLPQ } from '../test/fast-usdc/fu-actors.js';
 
 const USAGE = `
 Usage:
@@ -55,27 +55,6 @@ const runT = {
   },
 } as ExecutionContext;
 
-// from ../test/fast-usdc/fast-usdc.test.ts
-type VStorageClient = Awaited<ReturnType<typeof commonSetup>>['vstorageClient'];
-const agoricNamesQ = (vsc: VStorageClient) =>
-  harden({
-    brands: <K extends AssetKind>(_assetKind: K) =>
-      vsc
-        .queryData('published.agoricNames.brand')
-        .then(pairs => Object.fromEntries(pairs) as Record<string, Brand<K>>),
-  });
-
-const fastLPQ = (vsc: VStorageClient) =>
-  harden({
-    metrics: () =>
-      vsc.queryData(`published.fastUsdc.poolMetrics`) as Promise<PoolMetrics>,
-    info: () =>
-      vsc.queryData(`published.${contractName}`) as Promise<{
-        poolAccount: string;
-        settlementAccount: string;
-      }>,
-  });
-
 const parseCommandLine = () => {
   const { values, positionals } = parseArgs({
     options: {