[c++/python/r] Migrate to C++20

[XanthosXanthopoulos]

This PR migrates minimum C++ version to C++20 and replaces fmt::format with the now available std::format

Context: #3154 [sc-57301]

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.51%. Comparing base (946d3f7) to head (73efdbf).
Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3331      +/-   ##
==========================================
+ Coverage   85.14%   85.51%   +0.36%     
==========================================
  Files          53       54       +1     
  Lines        5568     5703     +135     
==========================================
+ Hits         4741     4877     +136     
+ Misses        827      826       -1     

Flag	Coverage Δ
python	85.51% <ø> (+0.36%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
python_api	85.51% <ø> (+0.36%)	⬆️
libtiledbsoma	∅ <ø> (∅)

---- 🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests

[johnkerl]

I know this is in draft and you haven't submitted it for review yet. :)

However -- CI is green and this is delightful work. I'm approving it in advance. Especially with regard to timezone alignment.

Feel free to merge this when you're ready.

Thanks again for doing this!!! :)

[johnkerl]

One note and cc @mojaveazure -- given that there are compile errors if RcppSpdlog is on a user's system and they have not updated -- I'd love a lower bound in apis/r/DESCRIPTION like RcppSpdlog (>= 0.0.19) -- however -- this is only a LinkingTo not an Imports

TileDB-SOMA/apis/r/DESCRIPTION

Line 52 in 75112e5

RcppSpdlog,

... is there a good way to get some automation around upgrading RcppSpdlog when users upgrade their tiledbsoma version (once we tag 1.15.0)?

[mojaveazure]

this is only a LinkingTo not an Imports

I don't think this matters. In R, the "hard" dependencies are Depends, Imports, and LinkingTo; these must be present and at the specified minimum version before the package can be installed. If we bump RcppSpdlog to >= 0.0.19, any user who does install.packages("tiledbsoma") or update.packages() will be required to install the newer version of RcppSpdlog before tiledbsoma 1.15.0 can be installed

Moreover, R and CRAN allow all types of dependencies (Depends, Imports, LinkingTo, Suggests, and Enhances) to have lower bounds (though only the first three have a hard check, manual checks must be carried out for Suggests and Enhances). Case in point, Seurat links to Rcpp >= 0.11.0

[johnkerl]

OK thank you @mojaveazure !

I did get an error on my laptop until I upgraded RcppSpdlog.

So since @mojaveazure asserts that LinkingTo can have a lower bound, I think let's please put in a lower bound at 0.0.19 for RcppSpglog.