support an option to run at the default max problemSpace

I plan on implementing this option (tonight) - it'd be great if you could provide quick feedback.

Given that each test has a very different meaning to the problem space (1d vs 2d, algorithm class) - it is difficult to scale something like the problem-space argument I provided in PR #18 across all tests.

What would the argument name be? --use-largest-default-problemspace ?

I need a capability such as this to reduce the amount of information coming from the tests to help give insights into each GPU or platforms strengths and weaknesses, that is all the smaller sizes would just lead to too many plots. The curent defaults inside were already well chosen sizes, so I think we should have a way to leverage them.

檢查 PR #18，以及現有對 problem-space 引數和每個測試預設值的處理。確定新選項應如何選取現有預設 problem space 中最大的一個，然後驗證較小的測試大小會被排除，且只會產生預期的 plots。

由索引模型根據 Issue 內容生成。