Implement appointment fetch and insertion

src/database.php

@@ -370,7 +370,9 @@ function configureCalendar($pdo, $data)
 
 function fetchCalendarEvents($pdo, $doctor)
 {
-    $query = "SELECT * from cita WHERE medico=?";
+    $query = "SELECT cita.id, fecha, hora, duracion, medico, observaciones, apellido, documento_identificativo from cita
+    INNER JOIN paciente ON cita.paciente = paciente.id
+    WHERE medico=?";
     $result = $pdo->prepare($query);
     $result->execute([$doctor]);
     $data = $result->fetchAll(PDO::FETCH_ASSOC);