Docs: Added README, contributing guide and code of conduct

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

CODE_OF_CONDUCT.md

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+# Code of Conduct
+
+__Code of Conduct__ of __KolibriOS__ project
+
+## Purpose
+
+The primary goal of our community is to be inclusive of a large number of contributors, with the most varied and diverse backgrounds possible. As such, we are committed to providing a friendly, safe and welcoming environment for all, regardless of gender, ability, ethnicity, socioeconomic status, and religion (or lack thereof)
+
+This code of conduct outlines our expectations for all those who participate in our community, as well as the consequences for unacceptable behavior
+
+We invite all those who participate in our community to help us create safe and positive experience for everyone
+
+## Expected Behavior
+
+The following behaviors are expected and requested of all community members:
+
+- Exercise consideration and respect in your speech and actions
+- Attempt collaboration before conflict
+- Refrain from demeaning or discriminatory behavior and speech
+- Be mindful of your surroundings and of your fellow participants
+
+Also alert community leaders if you notice a dangerous situation, someone in distress, or violations of this *Code of Conduct*, even if they seem inconsequential
+
+## Unacceptable Behavior
+
+The following behaviors are considered harassment and are unacceptable within our community:
+
+- Threats of violence or violent language directed against another person
+- Posting or displaying sexually explicit material
+- Personal insults
+- Deliberate intimidation, stalking or following
+- Advocating for, or encouraging, any of the above behaviors
+- Sustained disruption of community events, including talks and presentations
+
+## Reporting Guidelines
+
+If you are subject to or witness unacceptable behavior, or have any other concerns, please notify a community organizer as soon as possible
+
+## Scope
+
+We expect all community participants (contributors, sponsors and other guests) to abide by this *Code of Conduct* in all community venues as well as in all one-on-one communications pertaining to community business

CONTRIBUTING.md

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+# Contributing guide
+
+The __KolibriOS__ project __Contributing__ guide
+
+## Overview
+
+The process of contributing to the project is described in detail in this document.
+
+## Code of Conduct
+
+The first thing to do is to read and follow our [Code of Conduct](./CODE_OF_CONDUCT.md).
+
+## Type of contributing
+
+There are two main types of contributions: submitting issues about problems and submitting pull requests. Each of these types of contributions is described in detail below.
+
+## Issues
+
+You can help us by submitting issues to repository. At the moment there are 2 main ways of submitting an issue in the project: _bug reports_ and _feature requests_. All existing forms are provided with brief explanations
+
+- Reports are suitable if you find a __bug__ in some part of the project and want to create a report;
+- Also there is a possibility submit a __feature request__ if it seems to you that the project lacks any feature.
+
+## Pull requests
+
+You can also help us by submitting pull requests. The process of submitting a pull request consists of several steps:
+
+- Find what you want to implement or improve;
+- Make a fork (not relevant for owners);
+- Create a branch with a name that matches your changes;
+- Make and test the changes;
+- Create commits according to the [accepted style](##commit-style);
+- Create and submit a pull request;
+- 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 changes are corrected (if it's necessary) and merged into the project.
+
+## Commit style
+
+### Naming
+
+- Pattern
+
+  Regular commit message should consist of several parts and be built according to the following template:
+
+  ```test
+  Category: Commit message body
+
+  Long description if necessary
+  ```
+
+  - Commit message body and description should briefly reflect the meaning of the commit changes;
+  - Commit message body should be written starting with a capital letter;
+  - Description should be separated from the body by one empty line.
+
+- Length
+
+  The maximum number of characters in a commit header is __72__ (standard for __Git__). Additionally, __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
+  - `Skins` - skins
+  - `Build` - build system
+  - `CI/CD` - CI/CD
+  - `Docs` - documentation
+  - `Data` - images, configs, resources, etc.
+
+  List of categories for exceptional situations:
+
+  - `All` - global changes
+  - `Other` - unclassifiable 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
+
+Merge commits are __prohibited__ in the project
+
+### Unwanted commits
+
+Commit messages like `Refactoring`/`Update files` are __unwanted__ in the project
+
+### Signing
+
+This is not a requirement, but it is strongly recommended to sign commits. This can be done by the following command:
+
+```sh
+git commit -s
+```

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, its kernel is written entirely in [Fasm](https://flatassembler.net/) assembly language. Based on [MenuetOS](https://www.menuetos.net/), it uses its own standards and is not fully POSIX or UNIX compliant
+
+## Contributing
+
+Detailed instructions for the contribution process can be found in the [contributing guide](./CONTRIBUTING.md)
+
+Also there is an accepted [code of conduct](./CODE_OF_CONDUCT.md) in the project
+
+Common list of project tasks is located 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](COPYING.TXT) file for details