[Playground][Task]: Uniform code style for python scripts

[vchunikhin]

What needs to happen?

Python scripts that updates examples in Playground project during CI/CD running were not formatted uniformly. it makes them hard to read, so it has been formatted uniformly

PyCharm configuration:

• Tab size: 4
• Indent: 4
• Continuation indent: 6

In addition, code style was formatted according to https://www.flake8rules.com/

Issue Priority

Priority: 3

Issue Component

Component: beam-playground

[vchunikhin]

.take-issue