Add api football files updater

src/test/java/de/jeyp91/apifootball/APIFootballUpdaterTest.java

@@ -0,0 +1,20 @@
+package de.jeyp91.apifootball;
+
+import org.junit.Test;
+
+import java.io.IOException;
+
+public class APIFootballUpdaterTest {
+
+    @Test
+    public void updateFixturesTest() throws IOException {
+        APIFootballUpdater updater = new APIFootballUpdater(2021);
+        updater.updateFixtures(2743);
+    }
+
+    @Test
+    public void updateAllFixturesTest() throws IOException {
+        APIFootballUpdater updater = new APIFootballUpdater(2021);
+        updater.updateAllFixtures("Tippliga.json");
+    }
+}