Pyladies course update

[petracihalova]

update of the basic beginner's python course (for self-study) available here: https://naucse.python.cz/course/pyladies/

• for each lesson, materials are split into sections (learning materials, recordings, additional resources)
• added recordings for many lessons (source: encukou's youtube playlist)
• updated course long_description
• pyglet lesson moved in the end of the course
• added additional final projects (Snake + Klondike)
• added lesson about VS Code (created for Ostrava 2022 run https://naucse.python.cz/2022/ostrava-python/beginners/vscode/)
• added lesson about JSON and API

[encukou]

Could you split this into multiple PRs?

For the videos, yes, I guess it's time to add them. The sections make sense (they could use better support in naucse_render, but, let's not make that block the addition).

Git, and Graphics+games, would perhaps work better as separate courses. For now, moving them so they're together makes sense.

For JSON/API, the example app for the old lesson is offline, and for GitHub we should check if things didn't change. Let's not merge as-is.

For VS Code, I also don't think it's ready as-is. There are some typos, and it needs to be adjusted & checked on macOS & Linux. Having it in a separate PR would help. But, since not all cities use VS Code, perhaps keep it in Ostrava for a while longer.

[petracihalova]

@encukou thank you for feedback, I will close this one and prepare new PRs