Standardize code style using clang-format

[brendan-nasa]

• An initial .clang-format¹ (ci script to follow)
• intent:
  • pick a style
  • stick to it for all new/modified code
  • trick approaches consistency with every merge :)
  • no more caring about how ugly/pretty your code is. run git clang-format before commit and be done with it
• Choice of BasedOnStyle is ultimately arbitrary, but current trick codebase matches WebKit style² closest³
• Code styles can be explored at https://clang-format-configurator.site/
• Only a bare minimum, first step to adopting more automated tooling (clang-tidy linter would be the next step)

Footnotes

1. its not allman, but it is a nice middle ground :) ↩

2. See WebKit's style guidelines for what's included ↩

3. alandefreitas/clang-unformat was run on trick repo and webkit resulted in least number of lines changed ↩

[coveralls]

coverage: 55.913% (-0.009%) from 55.922%
when pulling 40ca011 on clang-format-proposal
into 3674388 on master.