Merge branch 'bonus_task' into 'main'

* Find a pair & review each others contributions

* There needs to be at least a single interaction: explanation, clarification, request for changes

### Bonus Task

Make a contribution to an Open Source project of your choice which doesn't have any relation to MUNI and not started/owned by you. Another requirement - it should be meaningful, introduce a positive change. Contributions like "This project is to practice your git skills. Add your name to this file and we will merge it." won't be counted. To find projects to contribute for example please look at: 

* [First Timers Only](https://www.firsttimersonly.com/)

* [10 C++ open source projects welcoming contributions](https://blog.codacy.com/10-cpp-open-source-projects/)

* [Contributions-welcome topics on GitHub](https://github.com/topics/contributions-welcome)

* [Hacktoberfest - 10th anniversary](https://hacktoberfest.com/). Check on [participation info](https://hacktoberfest.com/participation/)

It's ok if a PR/MR is open, but not merged yet by the deadline time. Add a `<UCO>.txt` file into `bonus_task` directory which contains a link to you contribution and maybe some words about it - anything you want to share about it. 

## Sylabus

(This will be polished during summer 2023 and will include materials)