🧪 TESTS: Add pyromark to benchmarks

[monosans]

Is using Rust considered cheating?

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[codecov[bot]]

Codecov Report

Patch coverage has no change and project coverage change: +0.90 :tada:

Comparison is base (14cca38) 95.17% compared to head (af23a2a) 96.07%.

:exclamation: Current head af23a2a differs from pull request most recent head ea0fa62. Consider uploading reports for the commit ea0fa62 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #265 +/- ## ========================================== + Coverage 95.17% 96.07% +0.90% ========================================== Files 64 62 -2 Lines 3437 3236 -201 ========================================== - Hits 3271 3109 -162 + Misses 166 127 -39 ``` | Flag | Coverage Δ | | |---|---|---| | pytests | `96.07% <ø> (+0.90%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=executablebooks#carryforward-flags-in-the-pull-request-comment) to find out more. [see 52 files with indirect coverage changes](https://app.codecov.io/gh/executablebooks/markdown-it-py/pull/265/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=executablebooks)

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[monosans]

On my machine, markdown-it-py is the fastest among pure-Python implementations. Good work!

I hope this pull request will be merged someday. :smile: