Add generic DAO with CSV implementation

1-Adapter/src/main/java/persistence/GenericDAO.java

@@ -0,0 +1,16 @@
+package persistence;
+
+import persistence.category.CategoryEntity;
+
+import java.util.Set;
+import java.util.function.Function;
+
+public interface GenericDAO<T> {
+
+	public Set<T> getALl();
+
+	void remove(T value);
+
+	void add(T value);
+
+}

1-Adapter/src/main/java/persistence/csv/CSVSerializable.java

@@ -0,0 +1,10 @@
+package persistence.csv;
+
+public interface CSVSerializable {
+
+	static String seperator = ",";
+
+	String[] getHeaders();
+
+	String toCSVString();
+}