Added controller for FileUpload, refactor of main package, try to add forum system.

src/main/java/site/easystartup/web/EasyStartupApplication.java

@@ -0,0 +1,15 @@
+package site.easystartup.web;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@SpringBootApplication
+public class EasyStartupApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(EasyStartupApplication.class, args);
+	}
+
+}