feat(annotation) : controller와 RequestMapping 에대한 annotation 추가

#13

src/main/java/spring/mvc/annotation/Controller.java

@@ -0,0 +1,12 @@
+package spring.mvc.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target({ ElementType.TYPE })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Controller {
+    String value() default "";
+}

src/main/java/spring/mvc/annotation/RequestMapping.java

@@ -0,0 +1,16 @@
+package spring.mvc.annotation;
+
+import spring.mvc.handler.mapping.RequestMethod;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target({ ElementType.METHOD, ElementType.TYPE })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface RequestMapping {
+    String value() default "";
+
+    RequestMethod method() default RequestMethod.GET;
+}