[WD-23309] feat: optimize page creation flow for better performance

[muhammad-ali-pk]

Problem Statement

When a user clicks on Request New Page button, fills out details and submits the form, the request takes a lot of time because it has to:
1. Create a google copydoc
2. Re-fetch the entire tree (all the projects) to invalidate cache
3. Refresh the page

This wait time can be reduced by:
1. Eliminating the need to re-fetch the entire tree (by optimizing the flow of data)
2. Eliminating the need to refresh
3. Invalidating cache on the backend, after creating a new webpage

Done

• Invalidate cache for corresponding repository after creating a new webpage, within create-page request
• Add a new helper function to insert a webpage w.r.t. to it's parent, within the tree.
• Update the tree after creating a new webpage, in realtime, without having to re-fetch the tree or reload the page.
• Drive-by: Cleaned up routes

QA

QA steps

• Check out this repo
• Run the project

docker run -d -p 5432:5432 -e POSTGRES_PASSWORD=postgres postgres
docker run -d -p 6379:6379 redis

dotrun

In a different terminal, run

dotrun exec celery -A webapp.app.celery_app worker -B  --loglevel=DEBUG

In another terminal, run

yarn dev

• Access the application on localhost:8104/app
• Wait for the projects to load
• Click on "Request new page" button
• Fill out the form and hit submit (Make sure to have VPN on for searching owners and reviewers)
• Make sure the new page is created, opened and reflected in the tree without reloading the page.

Fixes

• Fixes WD-23309
• Fixes WD-23310

[webteam-app]

Demo

Jenkins

demos.haus

[samhotep]

Hey @muhammad-ali-pk the PR looks good, there's just a few issues I found:

• on submitting the new page request the redirect shows a blank page with this error, but the page works when reloaded.
  
• when some of the sites trees are not populated e.g having only u.com generated, the tree view shows the loaded sites but the table view shows 0 for all tables
  

[muhammad-ali-pk]

@samhotep Thanks Sam. It's ready for another look.

[samhotep]

LGTM!

[github-actions]

🎉 This PR is included in version 1.0.0 🎉

The release is available on GitHub release

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