Ensure we have common isort configuration

[nkanderson]

We're seeing some conflicting formatting from isort on our different machines. We have some isort config in the setup.cfg file, but maybe there's a code editor setting that's making changes to something not specified in our config. One specific example is from the trace_parser file and the imports from config.project_config, which are either in parentheses and each on a new line, or no parens and all on one line, depending on the dev machine.

[nkanderson]

@reecewayt is going to check what isort does when he has an activated Python virtual env, in order to troubleshoot whether the config file is being detected in that case.