feat:新增硬件服务

pjcloud-hardware/pjcloud-hardware-api/src/main/java/com/example/Main.java

@@ -0,0 +1,7 @@
+package com.example;
+
+public class Main {
+    public static void main(String[] args) {
+        System.out.println("Hello world!");
+    }
+}