Tree: Add Schema export and compare APIs

[CraigMacomber]

Description

See changeset for details.

A realistic detailed usage example can be found in https://github.com/microsoft/FluidFramework/pull/22566/files#diff-b893cfcd2daa74fb9dd1a8b2ce47006faaaefcb7b83671f1413f63faf65257af showing how an actual app may use these APIs. Assuming this lands before the next release, the changeset could get a proper link to that code on main added as an example.

Reviewer Guidance

The review process is outlined on this wiki page.

[github-actions]

🔗 No broken links found! ✅

Your attention to detail is admirable.

linkcheck output

> [email protected] ci:linkcheck /home/runner/work/FluidFramework/FluidFramework/docs
> start-server-and-test ci:start 1313 linkcheck:full

1: starting server using command "npm run ci:start"
and when url "[ 'http://127.0.0.1:1313' ]" is responding with HTTP status code 200
running tests using command "npm run linkcheck:full"


> [email protected] ci:start
> http-server ./public --port 1313 --silent


> [email protected] linkcheck:full
> npm run linkcheck:fast -- --external


> [email protected] linkcheck:fast
> linkcheck http://localhost:1313 --skip-file skipped-urls.txt --external

Crawling...

Stats:
  427184 links
    3302 destination URLs
       2 URLs ignored
       0 warnings
       0 errors

[msfluid-bot]

⯅ @fluid-example/bundle-size-tests: +317 Bytes

Metric Name	Baseline Size	Compare Size	Size Diff
aqueduct.js	460.47 KB	460.5 KB	⯅ +35 Bytes
azureClient.js	557.45 KB	557.5 KB	⯅ +49 Bytes
connectionState.js	724 Bytes	724 Bytes	■ No change
containerRuntime.js	259.74 KB	259.76 KB	⯅ +14 Bytes
fluidFramework.js	405.91 KB	405.96 KB	⯅ +50 Bytes
loader.js	134.34 KB	134.36 KB	⯅ +14 Bytes
map.js	42.46 KB	42.46 KB	⯅ +7 Bytes
matrix.js	148.63 KB	148.64 KB	⯅ +7 Bytes
odspClient.js	524.41 KB	524.46 KB	⯅ +49 Bytes
odspDriver.js	97.84 KB	97.86 KB	⯅ +21 Bytes
odspPrefetchSnapshot.js	42.81 KB	42.82 KB	⯅ +14 Bytes
sharedString.js	164.82 KB	164.83 KB	⯅ +7 Bytes
sharedTree.js	396.37 KB	396.41 KB	⯅ +43 Bytes
Total Size	3.31 MB	3.31 MB	⯅ +317 Bytes

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Baseline commit: 014d670

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