Add -DNOMINMAX to app's CMakeLists.txt on Windows to fix an Open Source compile error

PiperOrigin-RevId: 251881627

Author: ryanmeier

app/CMakeLists.txt

@@ -294,6 +294,12 @@ else()
   add_definitions(-include assert.h -include string.h)
 endif()
 
+# Ensure min/max macros don't get declared on Windows
+# (so we can use std::min/max)
+if(MSVC)
+  add_definitions(-DNOMINMAX)
+endif()
+
 if(IOS)
   # Enable Automatic Reference Counting (ARC).
   set_property(