Use /FI for MSVC forced-includes (#2684)

### Description of changes: 
For MSVC, the `/FI` option should be used for force-includes:
https://learn.microsoft.com/en-us/cpp/build/reference/fi-name-forced-include-file?view=msvc-170

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under the terms of the Apache 2.0 license and the ISC license.

Author: justsmth

third_party/jitterentropy/CMakeLists.txt

@@ -35,7 +35,11 @@ else()
 endif()
 
 if(BORINGSSL_PREFIX)
-  set(JITTER_ENETROPY_PREFIX_INCLUDE "--include=${PROJECT_BINARY_DIR}/symbol_prefix_include/openssl/boringssl_prefix_symbols.h")
+  if(MSVC)
+    set(JITTER_ENETROPY_PREFIX_INCLUDE "/FI ${PROJECT_BINARY_DIR}/symbol_prefix_include/openssl/boringssl_prefix_symbols.h")
+  else()
+    set(JITTER_ENETROPY_PREFIX_INCLUDE "--include=${PROJECT_BINARY_DIR}/symbol_prefix_include/openssl/boringssl_prefix_symbols.h")
+  endif()
 endif()
 
 set(JITTER_COMPILE_FLAGS "${JITTER_COMPILE_FLAGS} ${JITTER_ENETROPY_PREFIX_INCLUDE}")