add JdbcTemplate

like Spring Data

src/main/java/ghast/database/DataAccessException.java

@@ -0,0 +1,12 @@
+package ghast.database;
+
+public class DataAccessException extends RuntimeException {
+
+	public DataAccessException(String msg) {
+		super(msg);
+	}
+
+	public DataAccessException(String msg, Throwable cause) {
+		super(msg, cause);
+	}
+}