Запрос на слияние 'patch' (#1) из patch в master

create README.md

upload files

update demo/artefacts.md

update demo/artefacts.md

Запрос на слияние 'pitch' (#1) из pitch в master

update README.md

update README.md

update README.md

update README.md

update README.md

create README.md

fix solution.cs and delete .csproj

add artifacts in demo

Переименована папка, добавлен код

rename folder, add dev/

delete scripts/PANDAS_CHEATSHEET.md

delete scripts/MATPLOTLIB_CHEATSHEET.md

delete scripts/CODE_REQUIREMENTS.md

delete scripts/ASSIGNMENTS_README.md

create spec/codex.md