feat: [v2] Use the new configuration system

[kentquirk]

This converts refinery to use the new configuration model that we've been moving towards

This is an enormous PR because there really wasn't a good way to change to a new configuration model slowly; it affected a lot of support code and tests.

Key elements include:

• The main configuration was reorganized into a collection of structs, each of which has appropriate struct tags for validation and defaults.
• All the configuration support code now uses the new configuration structs. Some of the function names have been changed, and more will be changed in this or later PRs.
• The Config interface changed to support this, which means that the mock config also changed.
• Rules have been restructured so that the rules file can be read without pre-reading it to understand its structure. This also enables it to be validated normally.
• All duration-related values are now specified as Duration objects and must be specified with units (like 3m30s or 100ms).
• Code supporting the legacy sharding system was removed. This required updating a couple of tests that had been designed around deterministic traceIDs.
• SampleCache no longer supports the legacy trace caching mechanism. Its code was deleted and tests updated.
• The "resize" cache management strategy was removed. Its code was deleted and tests updated.
• Tests requiring configuration were changed to generate YAML from a map rather than trying to embed YAML into the test scripts. This shortened them a lot and makes them easier to maintain.
• Along the way, several issues were uncovered in the configuration as it had been redefined and so those items were updated and the template regenerated.

There is still work to do before this can be released, but it's passing tests and I can go back to smaller PRs after this.

This closes a few of the planned issues for 2.0:
Closes #667
Closes #655
Closes #581

[TylerHelmuth]

I expected to see the new that new throughput sampler set as the default sampler in the rules. Are we still doing that and should it be part of this PR?

[kentquirk]

The new samplers will come in a separate PR.