#31 fix: AuthPrincipalArgumentResolver 설정 추가

- 로그인한 사용자의 정보가 담긴 AuthMember 매개변수에 정보를 넣어주기 위해서 리졸버를 추가하였습니다.

src/main/java/codesquad/fineants/spring/config/WebConfig.java

@@ -1,17 +1,30 @@
 package codesquad.fineants.spring.config;
 
+import java.util.List;
+
 import org.springframework.context.annotation.Configuration;
+import org.springframework.web.method.support.HandlerMethodArgumentResolver;
 import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
+import codesquad.fineants.domain.oauth.support.AuthPrincipalArgumentResolver;
 import codesquad.fineants.spring.intercetpor.LogoutInterceptor;
+import lombok.RequiredArgsConstructor;
 
 @Configuration
+@RequiredArgsConstructor
 public class WebConfig implements WebMvcConfigurer {
 
+	private final AuthPrincipalArgumentResolver authPrincipalArgumentResolver;
+
 	@Override
 	public void addInterceptors(InterceptorRegistry registry) {
 		registry.addInterceptor(new LogoutInterceptor())
 			.addPathPatterns("/api/auth/logout");
 	}
+
+	@Override
+	public void addArgumentResolvers(List<HandlerMethodArgumentResolver> resolvers) {
+		resolvers.add(authPrincipalArgumentResolver);
+	}
 }