Replace Gitpod for our demos

Problem/Motivation

Gitpod classic will be discontinued in April 2025, see this drupalpod issue 📌 Gitpod Classic will shut down, making Drupalpod obsolete Active . Since our demos rely on it, we'll need to find a replacement.

Steps to reproduce

Proposed resolution

Switch to GitHub Codespaces

Remaining tasks

User interface changes

API changes

Data model changes