Extend os_mmap to support map file from fd (#2763)

Add an extra argument `os_file_handle file` for `os_mmap` to support
mapping file from a file fd, and remove `os_get_invalid_handle` from
`posix_file.c` and `win_file.c`, instead, add it in the `platform_internal.h`
files to remove the dependency on libc-wasi.

Signed-off-by: Huang Qi <huangqi3@xiaomi.com>

core/shared/platform/windows/platform_internal.h

@@ -187,6 +187,12 @@ typedef uint32_t os_raw_file_handle;
 #define UWP_DEFAULT_VPRINTF
 #endif
 
+static inline os_file_handle
+os_get_invalid_handle()
+{
+    return NULL;
+}
+
 #ifdef __cplusplus
 }
 #endif

core/shared/platform/windows/win_file.c

@@ -1466,12 +1466,6 @@ os_is_dir_stream_valid(os_dir_stream *dir_stream)
     return true;
 }
 
-os_file_handle
-os_get_invalid_handle()
-{
-    return NULL;
-}
-
 bool
 os_is_handle_valid(os_file_handle *handle)
 {

core/shared/platform/windows/win_memmap.c

@@ -29,7 +29,7 @@ access_to_win32_flags(int prot)
 }
 
 void *
-os_mmap(void *hint, size_t size, int prot, int flags)
+os_mmap(void *hint, size_t size, int prot, int flags, os_file_handle file)
 {
     DWORD alloc_type = MEM_RESERVE;
     DWORD protect;