(Jim note: Adds abstraction to the OAuth class to allow the ability to
perform OAuth via external browser, and adds an AuthListener to act as
the local auth server.)
Code submissions have continually suffered from formatting
inconsistencies that constantly have to be addressed. Using
clang-format simplifies this by making code formatting more consistent,
and allows automation of the code formatting so that maintainers can
focus more on the code itself instead of code formatting.