perf: tune translate_cds implementation (#80)

[codecov[bot]]

Codecov Report

Patch coverage: 99.16% and project coverage change: +0.63 :tada:

Comparison is base (5f3c4cd) 88.23% compared to head (db8ef59) 88.86%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #81 +/- ## ========================================== + Coverage 88.23% 88.86% +0.63% ========================================== Files 19 19 Lines 7512 7966 +454 ========================================== + Hits 6628 7079 +451 - Misses 884 887 +3 ``` | [Impacted Files](https://codecov.io/gh/bihealth/hgvs-rs/pull/81?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=bihealth) | Coverage Δ | | |---|---|---| | [src/sequences.rs](https://codecov.io/gh/bihealth/hgvs-rs/pull/81?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=bihealth#diff-c3JjL3NlcXVlbmNlcy5ycw==) | `99.39% <99.16%> (-0.13%)` | :arrow_down: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=bihealth). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=bihealth)

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