Linear Algebra of Physical Quantities

[mpusz]

This is actually not an issue ;-)

I am just writing to let you all know that the first step of the integration of 2 major libraries targetting C++23 is done. You can find some examples in the documentation here: https://mpusz.github.io/units/use_cases/linear_algebra.html

The rest of the integration and testing will be possible when the following issues will be resolved: #36, #37, #38, #39.

Thank you all for making it happen!!!