Возможность компилировать библиотеку в C++20

[izvolov]

#114

[codecov]

Codecov Report

Merging #155 (dd4d4d0) into master (bdc8b86) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #155   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          132       133    +1     
  Lines         1821      1823    +2     
=========================================
+ Hits          1821      1823    +2     

Impacted Files	Coverage Δ
...urst/container/detail/dynamic_tuple_management.hpp	100.00% <100.00%> (ø)
include/burst/string/u8s.hpp	100.00% <100.00%> (ø)

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