Format all C++ code for one style and [optional]implement pr style check

[nassipkali]

Java projects has ./gradlew spotlessCheck, ./gradlew spotlessApply. That command formats all files to one style in Java. Format code with same way with clang-format
Optional: About PR style check I mean if PR didn't followed Code Style Guide then PR should be rejected by Bot.

[konard]

We have https://github.com/linksplatform/Settings/blob/main/.clang-format, maybe we can just use it with some CLI command.