feat: Added observer, controller and view

src/main/java/edu/ntnu/idi/idatt/Controller/exchangePageController.java

@@ -0,0 +1,4 @@
+package edu.ntnu.idi.idatt.Controller;
+
+public class exchangePageController {
+}

src/main/java/edu/ntnu/idi/idatt/Controller/mainPageController.java

@@ -0,0 +1,4 @@
+package edu.ntnu.idi.idatt.Controller;
+
+public class mainPageController {
+}

src/main/java/edu/ntnu/idi/idatt/Observer.java

@@ -0,0 +1,6 @@
+package edu.ntnu.idi.idatt;
+
+public interface Observer {
+
+    void update();
+}

src/main/java/edu/ntnu/idi/idatt/View/exchangePage.java

@@ -0,0 +1,4 @@
+package edu.ntnu.idi.idatt.View;
+
+public class exchangePage {
+}

src/main/java/edu/ntnu/idi/idatt/View/main_page.java → src/main/java/edu/ntnu/idi/idatt/View/mainPage.java

@@ -1,4 +1,4 @@
 package edu.ntnu.idi.idatt.View;
 
-public class main_page {
+public class mainPage {
 }