Finish to setup data access

public/site/templates/default.php

@@ -1 +1 @@
-<h1><?= $page->title() ?></h1>
+<h1><?= $page->title() ?></h1>

public/site/templates/home.json.php

@@ -0,0 +1,7 @@
+<?php
+
+$specificData = [];
+
+$data = array_merge($genericData, $specificData);
+
+echo json_encode($data);

public/site/templates/home.php

@@ -1,3 +1 @@
-<?php snippet('header') ?>
-  <div id="app"></div>
-<?php snippet('footer') ?>
+<?php snippet('generic-template') ?>