Github codespaces provides an easy and accessible IDE, especially for students who are issued school Chromebooks and don’t have access to Android Studio. Of course, Github codespaces is not a drop-in replacement for Android Studio due to the inability to deploy code. However, it would be nice to have the library working so that they can at least write the code.
There is a VS Code extension for editing FTC projects (FTC for VS Code - Visual Studio Marketplace). This might work because GitHub Codespaces works similarly to VS Code. However, I have not personally tested this.
Most extensions for regular VSCode should work on the web version.
Not super well versed in FTC, but a start up script (Codespaces calls them “Dev Containers”) may be required to get the packages to write/build code.