Ran clang-format

Fix 80 char line length violations

In D49963#1183036, @clayborg wrote:

This will be very cool. Biggest issues to watch out for is to make sure it doesn't return incorrect values when running for things like the thread count. If you switch to use the "m_debugger.GetCommandInterpreter().GetExecutionContext()" it should solve this by making sure the frame and thread are not filled in when the process is running. It might also be racy. For example if you say "continue", hopefully the process will be resumed by the time the prompt is asked to refresh itself. Since we get events asynchronously this might be a problem.

Addressed code review feedback to move to llvm::unique_function instead of function pointers for callbacks and type aliases instead of typedefs.

Thanks for the comments! Will address and resend for review.

Fix unit test build