js: add moduleInfo method (#2057)

Add a `ksu.moduleInfo()` in JS.
resolves https://github.com/tiann/KernelSU/issues/1571

test module's index.html

![image](https://github.com/user-attachments/assets/39920606-452c-4b19-abca-967c25146d6a)

The test module:

[moduleInfo_test.zip](https://github.com/user-attachments/files/17001977/moduleInfo_test.zip)

test module's result:

![image](https://github.com/user-attachments/assets/9dbbd2e8-f7ea-418f-b545-66d33ce1b3ae)

js/README.md

@@ -109,3 +109,12 @@ Show a toast message.
 import { toast } from 'kernelsu';
 toast('Hello, world!');
 ```
+
+### moduleInfo
+
+Get Module info.
+```javascript
+import { moduleInfo } from 'kernelsu';
+// print moduleId in console
+console.log(moduleInfo());
+```