Made updates to support automatic reload of the TestGroups after a test run

Updated from using random.choices to random.sample throughout where I need a random distinct set as choices does replacement so you can get the same item twice. Discovered in pricing testing.

Implemented single threaded worker on writing the logs to the json file for controlled access to the resource on the file system now we are multi-threading the tests.

Modified test runner to dispatch requests in parallel to make use of the fact that there is a lot of wait time for the LLM. Defaulting to 16 threads.

Saved file records to DB. Fixed a print to show the correct test-group name.

Updated the testing page to show the request/response pairs

Updated the offline save to save the actual request and response text

Added a missing comment

Fixed a bug where if the architecture had entirely failed and not generated a response the whole load of TestGroups would crash. Need to fix the root cause of the failure to generate a response, but also should be caught gracefully here in any event.

Refactored loading the TestGroups to make the structure of the json load and the DB load the same and clearer

Added comments throughout

Added loading of test groups from both the DB and the local file and merging these two

Adding the sqlite db where I will archive the test results and added the archiving code

Added the test reporting structure

Added utility to serve up the test questions