[WIP] Add syntax check for rust and C\C++ code (#108)

* proof of concept

* fix syntax for rust and add auto fix syntax

* fix syntax for C

* fix bug with files owner

* add information to wiki

* try to add ci

* format code from master

* even more format fixes

* change docker to docker-compose

* Exclude ./target_*/build directories from format check

* Run rustfmt only on project files

* add ulimit setup for long clang list

* merge

* fix rustfmt, exclude target Inc directory

* sync with master

* abspath

Co-authored-by: aanper <mail@s3f.ru>
Co-authored-by: Vadim Kaushan <admin@disasm.info>

wiki/Contributing.md

@@ -88,6 +88,12 @@ If you want to add some features or suggest some changes, do following steps:
 	* Your code is merged in master branch
 5. If you can do only part of work, create PR with `WIP` label. Describe what you have already done and what remains to be done and other people can help you.
 
+## Coding Style
+
+Flipper Zero source code is formatted using clang-format for C code and rustfmt for rust. We use the [Kernel Code Style](https://www.kernel.org/doc/html/latest/process/coding-style.html) with minor changes, you can see the rules in .clang-format file. The Github CI tests will automatically check the code format and fail if the format is incorrect.
+
+Also, you can check and fix format with syntax_check.sh script.
+
 ## Pull requests
 
 1. Don't forget reference issues or other PR