Msvc inline macros (pytorch#15197)

### Summary
Add MSVC support to inline macro

### Test plan
Manual testing for now. Will add CI support when I get a full msvc build
working.

Author: JacobSzwejbka

runtime/platform/compiler.h

@@ -55,9 +55,15 @@
  */
 
 #define ET_NORETURN [[noreturn]]
+
+// Inline/NoInline
+#if defined(_MSC_VER)
+#define ET_NOINLINE __declspec(noinline)
+#define ET_INLINE __forceinline
+#else
 #define ET_NOINLINE __attribute__((noinline))
 #define ET_INLINE __attribute__((always_inline)) inline
-#define ET_INLINE_ATTRIBUTE __attribute__((always_inline))
+#endif
 
 #if defined(__GNUC__)