refactor(devtools): Move and rename devtools-example

[alexvy86]

Description

Renames devtools-example to devtools-test-app, moves it from the @fluid-example scope to @fluid-private, and moves it to a folder with the new name. Pure renames, no changes to functionality.

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AB#7436

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• packages/tools/devtools/devtools-test-app/package.json: Language not supported

[github-actions]

🔗 No broken links found! ✅

Your attention to detail is admirable.

linkcheck output

> fluid-framework-docs-site@0.0.0 ci:check-links /home/runner/work/FluidFramework/FluidFramework/docs
> start-server-and-test "npm run serve -- --no-open" 3000 check-links

1: starting server using command "npm run serve -- --no-open"
and when url "[ 'http://127.0.0.1:3000' ]" is responding with HTTP status code 200
running tests using command "npm run check-links"


> fluid-framework-docs-site@0.0.0 serve
> docusaurus serve --no-open

[SUCCESS] Serving "build" directory at: http://localhost:3000/

> fluid-framework-docs-site@0.0.0 check-links
> linkcheck http://localhost:3000 --skip-file skipped-urls.txt

Crawling...

Stats:
  170486 links
    1603 destination URLs
    1838 URLs ignored
       0 warnings
       0 errors