Move two PWA demos to Demos repo

[mikehoffms]

Related PRs:

• Move two PWA demos to Demos repo #3514 - Docs repo PR updates the articles:
  • /progressive-web-apps/demo-pwas.md
  • /progressive-web-apps/how-to/background-syncs.md
  • /progressive-web-apps/how-to/handle-files.md
• Main Readme: My Movies>Background Sync, My Tracks>File Handlers MicrosoftEdge/Demos#88 - Demos repo PR moves the demos from repos:
  • https://github.com/captainbrosset/mytracks/
  • https://github.com/captainbrosset/movies-db-pwa/

Rendered article sections for review:

• Progressive Web App demos

  • /progressive-web-apps/demo-pwas.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/progressive-web-apps/demo-pwas?branch=pr-en-us-3514
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/user/mikehoffms/move-pwa-demos/microsoft-edge/progressive-web-apps/demo-pwas.md
  • Before/live: https://learn.microsoft.com/microsoft-edge/progressive-web-apps/demo-pwas
  • Changelist:

• Synchronize and update a PWA in the background > heading

  • /progressive-web-apps/how-to/background-syncs.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/progressive-web-apps/how-to/background-syncs?branch=pr-en-us-3514
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/user/mikehoffms/move-pwa-demos/microsoft-edge/progressive-web-apps/how-to/background-syncs.md
  • Before/live: https://learn.microsoft.com/microsoft-edge/progressive-web-apps/how-to/background-syncs
  • Changelist:

• Handle files in a PWA > heading

  • /progressive-web-apps/how-to/handle-files.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/progressive-web-apps/how-to/handle-files?branch=pr-en-us-3514
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/user/mikehoffms/move-pwa-demos/microsoft-edge/progressive-web-apps/how-to/handle-files.md
  • Before/live: https://learn.microsoft.com/microsoft-edge/progressive-web-apps/how-to/handle-files
  • Changelist:

AB#58439066

[mikehoffms]

maybe use this PR to make minor fix clarifying Filter buttons are mockup only, per Issue:

/pwa-installer/ -- the filter buttons in upper right don't do anything
MicrosoftEdge/Demos#90

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Learn Build status updates of commit 53d5295:

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microsoft-edge/progressive-web-apps/how-to/background-syncs.md	✅Succeeded	View
microsoft-edge/progressive-web-apps/how-to/handle-files.md	✅Succeeded	View
microsoft-edge/progressive-web-apps/samples/index.md	✅Succeeded	View
microsoft-edge/web-platform/samples.md	✅Succeeded	View

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Learn Build status updates of commit 1a73f4f:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
microsoft-edge/progressive-web-apps/how-to/background-syncs.md	⚠️Warning	View	Details
microsoft-edge/progressive-web-apps/samples/index.md	⚠️Warning	View	Details
microsoft-edge/progressive-web-apps/how-to/background-syncs-images/app-available-icon.png	✅Succeeded	View
microsoft-edge/progressive-web-apps/how-to/background-syncs-images/my-movie-list-pwa-demo.png	✅Succeeded	n/a (file deleted or renamed)
microsoft-edge/progressive-web-apps/how-to/handle-files-images/app-available-icon.png	✅Succeeded	View
microsoft-edge/progressive-web-apps/how-to/handle-files-images/pwa-file-handlers-demo-app.png	✅Succeeded	View
microsoft-edge/progressive-web-apps/how-to/handle-files.md	✅Succeeded	View
microsoft-edge/progressive-web-apps/samples/index-images/my-movies.png	✅Succeeded	n/a (file deleted or renamed)
microsoft-edge/progressive-web-apps/samples/index-images/my-tracks.png	✅Succeeded	n/a (file deleted or renamed)
microsoft-edge/web-platform/samples.md	✅Succeeded	View

microsoft-edge/progressive-web-apps/how-to/background-syncs.md

• Line 114, Column 1: [Warning: file-not-found - See documentation] Invalid file link: './background-syncs-images/my-movie-list-pwa-demo.png'.
• Line 116, Column 1: [Warning: file-not-found - See documentation] Invalid file link: './background-syncs-images/pwa-background-sync-api-demo.png'.

microsoft-edge/progressive-web-apps/samples/index.md

• Line 82, Column 1: [Warning: file-not-found - See documentation] Invalid file link: './index-images/todo.png'.
• Line 100, Column 1: [Warning: file-not-found - See documentation] Invalid file link: './index-images/todo.png'.

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