Windows support

[ntadej]

• StyleChange needs explicit constructors due to MSVC handling them differently (for usage in std::unique_ptr)
• minor cmake tweaks for multi-config
• tests will only run on CMake 3.22 and later as PATH needs to be set
• examples use native Qt CMake deployment macros
• QtSql is disabled by default on Windows (in separate PR I will probably disable it by default for all platforms)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (85673cb) 45.27% compared to head (63e3a67) 45.27%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #91   +/-   ##
=======================================
  Coverage   45.27%   45.27%           
=======================================
  Files          35       35           
  Lines        2125     2125           
=======================================
  Hits          962      962           
  Misses       1163     1163           

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[louwers]

I know nothing about Windows (and very little about Qt), so I cannot really do a proper review, but it looks legit!

[ntadej]

Thanks!

The goal is to cut a (pre)release of 3.0 soon so users can start properly testing. The initial feedback was promising so I do not expect major issues (besides some API changes motivating 2.X -> 3.X bump).