Edit examples on StackBlitz

Prerequisites

• I have searched for duplicate or closed feature requests
• I have read the contributing guidelines

Proposal

We currently can edit in StackBlitz things present in the documentation (in Docs). My proposal is to extend this behavior to our Examples by adding for example an "Edit on StackBlitz" button for each example.

Motivation and context

Users could save a lot of time if they want to test things related to our examples without having to download all examples or check our files in the repo or in their browser.