[DOC,INFRA] Doxygen groups

[eseiler]

See https://cdash.seqan.de/viewTest.php?onlyfailed&buildid=169845

• aligned_sequence -> alignment_aligned_sequence
• std was not defined, definition copied from 3.1.0

We sometimes define a group in a //!\cond DEV context, but then use it outside the //!\cond DEV context, which means it is not defined at that point. We could also just wrap each \ingroup in a //!\cond DEV, but it seems easier to just explicitly exclude such files from being processed for the user docs.

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Name	Status	Preview	Comments	Updated (UTC)
seqan3	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 15, 2023 11:57am

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Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (d8a4d68) 98.14% compared to head (7f899cf) 98.14%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #3200 +/- ## ======================================= Coverage 98.14% 98.14% ======================================= Files 269 269 Lines 11855 11855 ======================================= Hits 11635 11635 Misses 220 220 ``` | [Files](https://app.codecov.io/gh/seqan/seqan3/pull/3200?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=seqan) | Coverage Δ | | |---|---|---| | [...ment/aligned\_sequence/aligned\_sequence\_concept.hpp](https://app.codecov.io/gh/seqan/seqan3/pull/3200?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=seqan#diff-aW5jbHVkZS9zZXFhbjMvYWxpZ25tZW50L2FsaWduZWRfc2VxdWVuY2UvYWxpZ25lZF9zZXF1ZW5jZV9jb25jZXB0LmhwcA==) | `100.00% <ø> (ø)` | |

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