feat: report link sharing

[ryon]

Closes #1395

Summary

• Improve experience of getting and sharing validator results
• Once a job ID is obtained from the server, push it onto the browser history stack as a query parameter (?report=[id]), so that results can be referred to later
• Add handling for these query params to the app:
  • If there's an id in the URL, do a quick ping to see if that report exists
  • If so, show the "ready" status modal
  • If not, show an error with a CTA to "Start Over" (just dismisses the modal)
• In the "ready" status modal:
  • Show some copy advising about 30 days retention
  • Add buttons to copy URLs for HTML and JSON versions of the report

Expected behavior

New "ready" modal

Confirmation of clipboard operation

"error" status modal when trying to load a page with an invalid id in the query

Checklist

• Run the unit tests with gradle test to make sure you didn't break anything
• Format the title like "feat: [new feature short description]". Title must follow the Conventional Commit Specification(https://www.conventionalcommits.org/en/v1.0.0/).
• Linked all relevant issues
• Include screenshot(s) showing how this pull request works and fixes the issue(s)

[davidgamez]

Nice work!

[isabelle-dr]

One clarifying question: is the link to JSON a download of the JSON, or is it a link to an online instance of it?
Is there a way to test this locally?

[themightychris]

@isabelle-dr it's a direct link to the static JSON file, what happens when people click on it will depend on how their browser is set up. Developers will commonly have a JSON viewer extension installed which will open it in their browser with formatting. In most cases, to download it someone would have to right click and select Save or open it and then File->Save.

To test ahead of getting merged and deployed to the public instance, you'd need to follow the steps under web/client's README to spin up the UI in dev mode and the Java backend service locally.

[ryon]

Quick note: you shouldn't need to set up the Java backend to build and test the UI. The web app will connect to the existing cloud service.

[welcome]

🥳 Congrats on getting your first pull request merged!