Add extra Windows CI job

[lukaszstolarczuk]

and warn about missing curses lib only once in the build (it's repeated several times in Windows build).

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This change is 

[codecov]

Codecov Report

Merging #1053 (aab7724) into master (fbe4025) will decrease coverage by 0.10%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1053      +/-   ##
==========================================
- Coverage   94.30%   94.19%   -0.11%     
==========================================
  Files          48       48              
  Lines        4720     4720              
==========================================
- Hits         4451     4446       -5     
- Misses        269      274       +5     

Flag	Coverage Δ
tests_clang_debug_cpp17	93.55% <ø> (-0.12%)	⬇️
tests_gcc_debug	92.11% <ø> (-0.03%)	⬇️

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Impacted Files	Coverage Δ
include/libpmemobj++/condition_variable.hpp	73.80% <0.00%> (-4.77%)	⬇️
...libpmemobj++/detail/enumerable_thread_specific.hpp	98.91% <0.00%> (-1.09%)	⬇️
...ude/libpmemobj++/container/concurrent_hash_map.hpp	94.20% <0.00%> (-0.32%)	⬇️

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[igchor]

Reviewable status: 0 of 3 files reviewed, all discussions resolved

[KFilipek]

Reviewed 3 of 3 files at r1.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @lukaszstolarczuk)