✨ add subprocess.active

std/subprocess.nas

@@ -3,6 +3,10 @@ var create = func(vec) {
     return __subprocess_create(vec);
 }
 
+var active = func(pid) {
+    return __subprocess_active(pid);
+}
+
 var terminate = func(pid) {
     return __subprocess_terminate(pid);
 }