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Add `build-with-entropy` pipeline #5286

Job	Run time
MSVC 4.20	1m 35s
Current MSVC	2m 38s
Current msys2 mingw32	4m 13s
MSVC 4.20 with entropy (0)	1m 29s
MSVC 4.20 with entropy (1)	1m 49s
MSVC 4.20 with entropy (2)	1m 28s
Current msys2 clang32	5m 27s
MSVC 4.20 with entropy (3)	1m 40s
MSVC 4.20 with entropy (4)	1m 40s
MSVC 4.20 with entropy (5)	1m 39s
MSVC 4.20 with entropy (6)	1m 32s
MSVC 4.20 with entropy (7)	1m 55s
MSVC 4.20 with entropy (8)	1m 39s
MSVC 4.20 with entropy (9)	1m 30s
Download original binaries / fetch	2s
Merge entropy artifacts	4s
Compare with master	1m 53s
Upload artifacts	0s
	32m 13s

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