introduce new seqan3::detail::transfer_type_modifier_onto

[marehr]

This is needed to finish PR #2359 to workaround a nasty "bug" described in seqan/product_backlog#286.

[codecov]

Codecov Report

Merging #2365 (8112d0e) into master (44ba173) will decrease coverage by 0.00%.
The diff coverage is 61.53%.

@@            Coverage Diff             @@
##           master    #2365      +/-   ##
==========================================
- Coverage   98.21%   98.21%   -0.01%     
==========================================
  Files         263      264       +1     
  Lines       10772    10784      +12     
==========================================
+ Hits        10580    10591      +11     
- Misses        192      193       +1     

Impacted Files	Coverage Δ
include/seqan3/io/alignment_file/format_sam.hpp	96.33% <0.00%> (-1.80%)	⬇️
...de/seqan3/io/alignment_file/sam_tag_dictionary.hpp	100.00% <ø> (ø)
...nclude/seqan3/core/configuration/configuration.hpp	100.00% <100.00%> (ø)
include/seqan3/core/detail/debug_stream_byte.hpp	100.00% <100.00%> (ø)
...n3/search/dream_index/interleaved_bloom_filter.hpp	100.00% <100.00%> (ø)
include/seqan3/core/detail/debug_stream_type.hpp	76.92% <0.00%> (+15.38%)	⬆️

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[joergi-w]

In my opinion, this feature can become part of template_inspection.hpp, which contains already related functions (which I would love to see in stable (non-detail) API in the future in order to use them in my application).

[marehr]

In my opinion, this feature can become part of template_inspection.hpp, which contains already related functions (which I would love to see in stable (non-detail) API in the future in order to use them in my application).

template_inspection.hpp contains only utility that works on template template things. So it doesn't really fit. We decided to make core NOAPI that means you can use it, but we don't guarantee that it will never break.

[eseiler]

💅