* This is better than testing by platform/platform version, because we can check
specifically for extensions and avoid running a test we know will fail because
extensions aren't supported.
* This suppresses the use of a global try/except to catch exceptions then log &
continue. Instead it runs the test and lets the debugger catch any exceptions
that happen.
* Built entirely independently of the main renderdoc build (for now).
* Contains python scripts & framework for running tests on a renderdoc build,
which will be run nightly.