fix gradle dependencies

core-impl/src/main/java/de/kentoj/scrow/economy/EconomyServiceImpl.java

@@ -0,0 +1,4 @@
+package de.kentoj.scrow.economy;
+
+public class EconomyServiceImpl {
+}

core-impl/src/main/java/de/kentoj/scrow/economy/Main.java

@@ -0,0 +1,8 @@
+package de.kentoj.scrow.economy;
+
+public class Main {
+    public static void main(String[] args) {
+        var a = new MongoDbHelper();
+        a.close();
+    }
+}

core-impl/src/main/java/de/kentoj/scrow/economy/MongoDbHelper.java

@@ -0,0 +1,25 @@
+package de.kentoj.scrow.economy;
+
+import com.mongodb.client.MongoClient;
+import com.mongodb.client.MongoClients;
+import com.mongodb.client.MongoDatabase;
+import lombok.Getter;
+
+import java.io.Closeable;
+
+public class MongoDbHelper implements Closeable {
+
+    private final MongoClient con;
+    @Getter
+    private final MongoDatabase database;
+
+    public MongoDbHelper() {
+        con = MongoClients.create("mongodb://:@localhost:27017/db?ssl=false");
+        database = con.getDatabase("scrow");
+    }
+
+    @Override
+    public void close() {
+        con.close();
+    }
+}