Add cors configuration

src/main/java/com/example/plantsforyou/security/config/CorsConfig.java

@@ -0,0 +1,17 @@
+package com.example.plantsforyou.security.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+@EnableWebMvc
+public class CorsConfig implements WebMvcConfigurer {
+    @Override
+    public void addCorsMappings(CorsRegistry registry) {
+        registry.addMapping("/**")
+                .allowedMethods("*")
+                .allowedHeaders("*");
+    }
+}