API layer added

pom.xml

@@ -53,7 +53,7 @@
 							<transformers>
 								<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
 									<mainClass>
-										src.main.java.com.example.helloWorld</mainClass>
+										gui.GuiMain</mainClass>
 								</transformer>
 							</transformers>
 						</configuration>

src/main/java/api/OpenWeatherMapApi.java

@@ -0,0 +1,4 @@
+package api;
+
+public class OpenWeatherMapApi {
+}

src/main/java/com/example/helloWorld.java

@@ -1,9 +0,0 @@
-package com.example;
-
-public class helloWorld {
-    public static void main(String[] args) {
-        System.out.println("Hello world!");
-        System.out.println("Hello world!");
-    }
-
-}