Add a Pyodide runner based on the python-execution-prototypes

[tuzz]

This pull request adds experimental support for running Python programs using Pyodide. The code is based on the python-execution-prototypes and the technical analysis document. The related GitHub issue is https://github.com/RaspberryPiFoundation/editor-ui/issues/891.

The PyodideRunner.jsx can be used instead of the current PythonRunner.jsx (Skulpt) by provided a ?pyodide=true parameter in the URL as shown in the screenshot below:

Notes

The PyodideRunner supports the following features:

• Execution of Python programs
• Importing of most of Python's standard library
• Importing of many common Python packages
• Importing of pure Python packages from PyPi
• Stopping execution
• Sending standard input to Python programs
• Closing the standard input stream by pressing Ctrl-d
• Visualising turtle graphics using the modified turtle package
• Visualising pygal charts using the modified pygal package

Due to time constraints, the following tasks remain outstanding:

• Visualising sense_hat graphics using the modified sense_hat package
  • There is a work-in-progress pull request here
• Apply HTTP headers in a service worker (see https://github.com/RaspberryPiFoundation/editor-ui/issues/903)
  • Note that crossorigin will need to be added to cross-domain resources once the HTTP headers are added
• Add unit/integration tests that run real Python programs through the PyodideRunner.jsx
• Manual testing for backwards compatibility of existing Python programs, projects and the WebComponent
• Implementing the p5 package to work with Pyodide
  • See https://github.com/RaspberryPiFoundation/editor-ui/issues/949
• Implementing a dedicated SQL editor for use in the Ada CS project
  • Note that Pyodide supports importing sqlite3 so we can add a UI wrapper around it

[github-actions[bot]]

• Github Run 7570888691
• Test coverage: 85%

[github-actions[bot]]

• Github Run 7583828967
• Test coverage: 85%

[github-actions[bot]]

• Github Run 7584198244
• Test coverage: 85%

[github-actions[bot]]

• Github Run 7710553658
• Test coverage: 78%

[github-actions[bot]]

• Github Run 7710751536
• Test coverage: 78%

[github-actions[bot]]

• Github Run 7873408006
• Test coverage: 78%

[github-actions[bot]]

• Github Run 7876456277
• Test coverage: 78%

[sra405]

Due to time constraints, the following tasks remain outstanding:

• Visualising sense_hat graphics using the modified sense_hat package

  • There is a work-in-progress pull request here

• Apply HTTP headers in a service worker (see Investigate setting Pyodide HTTP headers via a service worker #903)

  • Note that crossorigin will need to be added to cross-domain resources once the HTTP headers are added
• Add unit/integration tests that run real Python programs through the PyodideRunner.jsx
• Manual testing for backwards compatibility of existing Python programs, projects and the WebComponent

• Implementing the p5 package to work with Pyodide

  • See Support "python mode" for the p5 package and support the py5 package python-execution-prototypes#1

• Implementing a dedicated SQL editor for use in the Ada CS project

  • Note that Pyodide supports importing sqlite3 so we can add a UI wrapper around it

I'll make a general ticket to list the remaining work, feel free to add any additional bits or comments 👍