Enable dts-trimming for packages/service-clients

[jikim-msft]

Description

Related: 18176

This PR adds type-trimming for packages/service-clients directory. The changes introduced are:

• Add npm copyfiles package as devDependency
• Add dtsRollup in api-extractor.json
• Enable both type-trimming for both ESM & CJS
• Make fluidBuild to fetch dependencies from the scripts included in dependsOn

[msfluid-bot]

⯅ @fluid-example/bundle-size-tests: +14 Bytes

Metric Name	Baseline Size	Compare Size	Size Diff
aqueduct.js	447.55 KB	447.55 KB	⯅ +2 Bytes
connectionState.js	680 Bytes	680 Bytes	■ No change
containerRuntime.js	240.64 KB	240.64 KB	■ No change
loader.js	165.06 KB	165.07 KB	⯅ +2 Bytes
map.js	48.06 KB	48.06 KB	⯅ +2 Bytes
matrix.js	141.84 KB	141.85 KB	⯅ +2 Bytes
odspDriver.js	90.35 KB	90.35 KB	⯅ +2 Bytes
odspPrefetchSnapshot.js	41.82 KB	41.82 KB	⯅ +2 Bytes
sharedString.js	162.75 KB	162.75 KB	■ No change
sharedTree2.js	275.44 KB	275.44 KB	■ No change
Total Size	1.73 MB	1.73 MB	⯅ +14 Bytes

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Baseline commit: 13dc16e

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