feat: add a histrical wit-bindgen

__wasm/wit-bindgen-sample/wit-bindgen/crates/gen-spidermonkey/spidermonkey-wasm/malloc.cpp

@@ -0,0 +1,18 @@
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "smw/abort.h"
+#include "smw/wasm.h"
+
+namespace smw {
+
+WASM_EXPORT
+void* SMW_malloc(size_t size) {
+    auto p = malloc(size);
+    if (p == nullptr) {
+        abort("out of memory");
+    }
+    return p;
+}
+
+} // namespace smw