Docs: Added README and contributing guide

Co-authored-by: Burer
Signed-off-by: Max Logaev <maxlogaev@proton.me>

CONTRIBUTING.md

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+# Contributing guide
+
+## Type of contributing
+
+There are two main types of contributions, accepted in KolibriOS:
+
+- Submitting issues about problems in project
+- Submitting code to project via pull requests
+
+Each of these types is described in details below.
+
+## Issues
+
+You can help us by submitting issues about problems, found in system. Currently, there are two main ways of submitting an issue in the project: **Bug Reports** and **Feature Requests**:
+
+- Bug Reports are suitable if you find a **bug** (crash, error, inexcpected behaviour) in some part of the system (kernel, drivers, apps etc.) and want to report it
+- Feature Request are used, when you wont to propose some **improvement** to the system (missing features, impoved user experience, etc.)
+
+## Pull requests
+
+You can also help us by submitting code via pull requests. The process of submitting a pull request consists of following steps:
+
+1. Find what you want to implement or improve
+2. Make a fork of kolibrios repository
+3. Create a branch with a name that matches your changes
+4. Implement and test the changes
+5. Create commits according to the [accepted style](##commit-style)
+6. Create and submit a pull request into main branch
+7. Wait for CI/CD pipelines and code review to pass
+
+When a pull request is submitted, at least two project participants must conduct a code review, after which the proposed changes can be corrected (if it's necessary) and merged into the project.
+
+## Commit style
+
+### Pattern
+
+Кegular commit message should adhere to the following pattern
+
+```test
+[Category] Commit message header
+
+Commit message body, if needed
+```
+
+- Commit message header and body should reflect changes made in commit
+- Commit message header should start with a capital letter
+- Commit message body should be separated from the header by one empty line
+
+### Length
+
+Maximum number of characters in a commit header is **72** (standard for **Git**). Also, **72** is the maximum length of a line in a commit body.
+
+### Categories
+
+List of existing categories accepted in the project:
+
+- `Krn` - kernel
+- `Drv` - drivers
+- `Libs` - libraries
+- `Apps` - user-space applications
+- `Skins` - skins
+- `Build` - build system
+- `CI/CD` - CI/CD
+- `Docs` - documentation
+- `Data` - images, configs, resources, etc.
+- `All` - global changes
+
+If changes are made to a specific component, the name of the component separated by `/` character needs to be specified. For example:
+
+```text
+Apps/shell
+Libs/libimg
+```
+
+## Merge commits
+
+> [!WARNING]
+> Merge commits are **prohibited** in the project
+
+## Conclusion
+
+We hope this small instructions will help you to can common with KolibriOS contributon and inspire you to participate in the work of this project.

README.md

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+# KolibriOS
+
+[![License](https://img.shields.io/badge/License-GPL%202.0-green)](./COPYING.TXT)
+[![Build system](https://git.kolibrios.org/KolibriOS/kolibrios/actions/workflows/build.yaml/badge.svg)](https://git.kolibrios.org/KolibriOS/kolibrios/actions/workflows/build.yaml)
+
+KolibriOS is a hobby operating system for x86-compatible computers, which is currently being developed by a small teem of enthusiasts.
+
+It's kernel is written entirely in [FASM](https://flatassembler.net/) assembly language, making it very compact and lean on system resources.
+
+Based on [MenuetOS](https://www.menuetos.net/), it uses its own standards and is NOT fully POSIX or UNIX compliant
+
+## Contributing
+
+We would appreciate any participation in the project and always welcome new users and contributors.
+
+Detailed instructions for the contribution process can be found in the [contributing guide](./CONTRIBUTING.md).
+
+Common list of tasks, issues and enhancement proposals can be found on [this page](https://git.kolibrios.org/KolibriOS/kolibrios/issues).
+
+## Special thanks
+
+The KolibriOS team expresses special thanks to the author of the 32-bit **MenuetOS**, [Ville Turjanmaa](https://www.menuetos.net/contact.htm). We also want to note that all **MenuetOS** copyrights have been preserved.
+
+## License
+
+Contents of this repository are licensed under the terms of **GNU GPL 2.0** unless otherwise specified.
+
+See [this](./kernel/trunk/COPYING.TXT) file for details.