gltfpack: Specify supported Node version in package.json

Also fix formatting in wasmstubs.cpp as a drive-by.

Author: zeux

gltf/package.json

@@ -21,5 +21,8 @@
 	],
 	"scripts": {
 		"prepublishOnly": "node cli.js -v"
+	},
+	"engines": {
+		"node": ">=18"
 	}
 }

tools/wasmstubs.cpp

@@ -2,9 +2,9 @@
 #error This file contains libc stubs for WASI SDK and should only be used in non-Emscripten WebAssembly builds
 #endif
 
+#include <assert.h>
 #include <stddef.h>
 #include <stdint.h>
-#include <assert.h>
 
 extern unsigned char __heap_base;
 static intptr_t sbrkp = intptr_t(&__heap_base);