Add data and scripts

[kp992]

Hi @mmcky and @Jiarui-ZH,

In order to get all the data, let's plan to:

• migrate all the static data from lecture-python-intro repo to this data/static
• Add data of the failing lectures from https://github.com/kp992/intro-wasm-demo/issues to data/dynamic. Also, to download and save this data, let's add all the relevant python scripts to scripts/ folder. Later, we can use all these scripts to update the data periodically.
• Update all the paths in all the lectures of lecture-python-intro

@Jiarui-ZH Can you please help with these tasks? Thank you.