Apply clang-format for core/shared and product-mini files (#785)

Apply clang-format for core/shared and product-mini files

product-mini/app-samples/hello-world/main.c

@@ -6,7 +6,8 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-int main(int argc, char **argv)
+int
+main(int argc, char **argv)
 {
     char *buf;