tree: Import / Export demo

[CraigMacomber]

Description

Added import/export options for tree content and schema, and example script using them.

Reviewer Guidance

The review process is outlined on this wiki page.

[msfluid-bot]

	Warnings
:warning:	Bundle size regression detected -- please investigate before merging!

⯅ @fluid-example/bundle-size-tests: +33.83 KB

Metric Name	Baseline Size	Compare Size	Size Diff
aqueduct.js	464.41 KB	464.45 KB	⯅ +35 Bytes
azureClient.js	562.65 KB	562.7 KB	⯅ +49 Bytes
connectionState.js	724 Bytes	724 Bytes	■ No change
containerRuntime.js	261.98 KB	261.99 KB	⯅ +14 Bytes
fluidFramework.js	407.51 KB	424.32 KB	⯅ +16.81 KB
loader.js	134.17 KB	134.18 KB	⯅ +14 Bytes
map.js	42.71 KB	42.71 KB	⯅ +7 Bytes
matrix.js	148.54 KB	148.54 KB	⯅ +7 Bytes
odspClient.js	528.5 KB	528.55 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	164.75 KB	164.76 KB	⯅ +7 Bytes
sharedTree.js	397.97 KB	414.77 KB	⯅ +16.8 KB
Total Size	3.33 MB	3.36 MB	⯅ +33.83 KB

---

Baseline commit: ebfbfaa1262f58e2b718165ac3b656d5dbc7f33d

Generated by :no_entry_sign: dangerJS against 374ddc822fcf7cdc55d8fc4bd23f0fd211c5264d

[github-actions[bot]]

🔗 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:
  440610 links
    3397 destination URLs
       2 URLs ignored
       0 warnings
       0 errors