Add content to README.md and fix licenses

## Background
Basic setup of the project is needed.

## Feature
Add content to the `README.md` and check the license text in the files is correct.

## Proposed Solution
`README.md` content:
1. Description of the project/app, it's purpose and target (content of the presentation form Hackathon can be used)
2. Logic of processing
3. Requirements

Licenses check:
1. Year of inception (2023)
2. whitespaces