test: speed up compile time

Removes implicit includes to <windows.h> and <cr/StringView.h> from all
files.

Goes from 30 to 20 seconds.

1 files changed, 1 insertions, 1 deletions

diff --git a/test/region.cpp b/test/region.cpp
index ab0d552a..ed3c38f7 100644
--- a/test/region.cpp
+++ b/test/region.cpp
@@ -100,7 +100,7 @@ void test3()
 
 } // namespace
 
-void test_app::test_region()
+void Test::test_region()
 {
     test1();
     test2();