Include times per line in statistics

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 91.17647% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 71.92%. Comparing base (d347535) to head (44f7a64).

Files	Patch %	Lines
src/benchmark/summarizer/first-phase/process.ts	82.35%	3 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #830 +/- ## ========================================== + Coverage 71.84% 71.92% +0.08% ========================================== Files 202 202 Lines 7274 7296 +22 Branches 1125 1227 +102 ========================================== + Hits 5226 5248 +22 - Misses 1691 1694 +3 + Partials 357 354 -3 ```

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[Ellpeck]

TODO: standard deviation for 1 run is 0 because it gets summarized from just one run, and then the standard deviation for the total is also 0 because it gets calculated based on the other standard deviations. that's wrong & bad

This and a lot of other problems will be solved by flipping summarization order (currently we summarize all runs of a file first, then summarize over those. we should be summarizing all files of the nth run, and then summarizing all runs)

[EagleoutIce]

This pull request is included in v2.0.3 (see Release v2.0.3 (Fine-Grained Benchmarks)).

[EagleoutIce]

This pull request is included in v2.0.3 (see Release v2.0.3 (Fine-Grained Benchmarks)).