feat: add point mall redemption

backend/src/main/java/com/openisle/config/PointGoodInitializer.java

@@ -0,0 +1,31 @@
+package com.openisle.config;
+
+import com.openisle.model.PointGood;
+import com.openisle.repository.PointGoodRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.stereotype.Component;
+
+/** Initialize default point mall goods. */
+@Component
+@RequiredArgsConstructor
+public class PointGoodInitializer implements CommandLineRunner {
+    private final PointGoodRepository pointGoodRepository;
+
+    @Override
+    public void run(String... args) {
+        if (pointGoodRepository.count() == 0) {
+            PointGood g1 = new PointGood();
+            g1.setName("GPT Plus 1 个月");
+            g1.setCost(20000);
+            g1.setImage("https://openisle-1307107697.cos.ap-guangzhou.myqcloud.com/assert/icons/chatgpt.png");
+            pointGoodRepository.save(g1);
+
+            PointGood g2 = new PointGood();
+            g2.setName("奶茶");
+            g2.setCost(5000);
+            g2.setImage("https://openisle-1307107697.cos.ap-guangzhou.myqcloud.com/assert/icons/coffee.png");
+            pointGoodRepository.save(g2);
+        }
+    }
+}