Use YAML templates for setting up Python and running tests.
Use matrix instead of separate jobs for Windows 32-bit and 64-bit runs.
Change --debugpy-logs to --debugpy-log-dir with explicit destination, and use that to capture and publish test logs in CI.
Delete logs for passed tests by default, and add --debugpy-log-passed to opt out.
Fix various bugs around handling of disconnect in JsonIOStream and JsonMessageChannel.
Fix handling of DAP "terminated" event in debug.Session.
Add --ptvsd-logs and --pydevd-logs switches to pytest.
Improve message logging to fully capture the raw message data in the logs if deserialization fails.
Log all debuggee environment variables in debug.Session, and improve log readability.
