🔧Chore: 后端框架初始化

backend/src/main/java/cn/hezhaohui/backend/BackendApplication.java

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+package cn.hezhaohui.backend;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class BackendApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(BackendApplication.class, args);
+    }
+
+}

backend/src/main/resources/application.properties

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+spring.application.name=backend

backend/src/test/java/cn/hezhaohui/backend/BackendApplicationTests.java

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+package cn.hezhaohui.backend;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class BackendApplicationTests {
+
+    @Test
+    void contextLoads() {
+    }
+
+}