Add prebuildify step for mac

packages/rhsplib/scripts/build-RHSPlib.mjs

@@ -36,12 +36,28 @@ await runCmakeWithArgs(["--build", ".", ...buildOptions]);
 
 console.log("\nSuccessfully built RHSPlib");
 
+if(platform() === "darwin") {
+    await prebuildify(["--napi", "--platform=darwin", "--arch=x64"], buildPath);
+}
+
+async function prebuildify(args, cwd) {
+    const prebuildify = spawn(`prebuildify`, args);
+    prebuildify.stderr.pipe(process.stderr);
+    prebuildify.stdout.pipe(process.stdout);
 
-console.log("darwin");
-fs.readdirSync(buildPath).forEach(file => {
-    console.log(file);
-});
-console.log();
+    await new Promise((resolve, reject) => {
+        prebuildify.on("error", (e) => reject(e));
+        prebuildify.on("exit", (code, signal) => {
+            if (signal != null) {
+                reject(new Error(`CMake execution was terminated by signal ${signal}`));
+            } else if (code === 0) {
+                resolve();
+            } else {
+                reject(`CMake exited with code ${code}`);
+            }
+        });
+    });
+}
 
 async function runCmakeWithArgs(args) {
     const cmake = spawn("cmake", args, {