feature/cierres (#25)

Varios cambios

Co-authored-by: Juan Pablo Vial <jpvialb@incoviba.cl>
Reviewed-on: #25

app/src/Model/UF.php

@@ -0,0 +1,19 @@
+<?php
+namespace Incoviba\Model;
+
+use DateTimeInterface;
+use Incoviba\Common\Ideal;
+
+class UF extends Ideal\Model
+{
+    public DateTimeInterface $fecha;
+    public ?float $valor;
+
+    public function jsonSerialize(): array
+    {
+        return [
+            'fecha' => $this->fecha,
+            'valor' => $this->valor
+        ];
+    }
+}