Formatter style

[TimSiebert1]

Hi,

i would like to add a formatter style for 'clang-format' (usable in command line, vscode, emacs, vim, etc..) to unify our code format. The current style is the llvm-style with a different macro indentation.

The PR includes:

• the '.clang-format' file to define the style
• an example formatted file 'uni5_for.c' for two different macro indentation options (see commit c097aef and 709b5d0)

I prefer the latter style, but lets discuss it.

[TimSiebert1]

Thats interesting. The formatting changes the order of '#include', which results in the definition of 'snprintf' with '_snprintf' on windows systems. This is not allowed anymore and the definition can simply be removed: https://stackoverflow.com/questions/27754492/vs-2015-compiling-cocos2d-x-3-3-error-fatal-error-c1189-error-macro-definiti

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2 out of 3 committers have signed the CLA.

✅ TimSiebert1
✅ juanlucasrey
❌ Clang Robot

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[TimSiebert1]

I will make a different PR with all formatted files