(Jim note: This gives the ability for auth login callbacks to know which
specific service type is being used. For example, with something like
YouTube, there's multiple variants: RTMP, RTMPS, and HLS. This way, the
service login callback can determine how it wants to treat the login
procedure depending on the specific type of service.)
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.