feat: add CORS configuration to WebConfig for API access

Author: nayanmapara

backend/blog/src/main/java/me/nayanm/blog/config/WebConfig.java

@@ -1,4 +1,25 @@
 package me.nayanm.blog.config;
 
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
 public class WebConfig {
+
+    @Bean
+    public WebMvcConfigurer corsConfigurer() {
+        return new WebMvcConfigurer() {
+            @Override
+            public void addCorsMappings(CorsRegistry registry) {
+                registry.addMapping("/api/**")
+                        .allowedOrigins("https://blogfrontend.z9.web.core.windows.net")
+                        .allowedMethods("GET", "POST", "PUT", "DELETE", "OPTIONS")
+                        .allowedHeaders("*")
+                        .allowCredentials(true);
+            }
+        };
+    }
 }
+