use dot notation in LinkedData

Author: oscarotero

src/Detectors/Image.php

@@ -19,6 +19,6 @@ public function detect(): ?UriInterface
             ?: $oembed->url('thumbnail_url')
             ?: $metas->url('og:image', 'og:image:url', 'og:image:secure_url', 'twitter:image', 'twitter:image:src', 'lp:image')
             ?: $document->link('image_src')
-            ?: $ld->url('image', 'url');
+            ?: $ld->url('image.url');
     }
 }

src/Detectors/PublishedTime.php

@@ -23,8 +23,10 @@ public function detect(): ?Datetime
                 'video:release_date',
                 'newsrepublic:publish_date'
             )
-            ?: $ld->time('pagePublished')
-            ?: $ld->time('datePublished')
+            ?: $ld->time(
+                'pagePublished',
+                'datePublished'
+            )
             ?: $this->detectFromPath()
             ?: $metas->time(
                 'pagerender',

src/LinkedData.php

@@ -24,11 +24,15 @@ private function get(string ...$keys)
             return null;
         }
 
-        foreach ($graph->getNodes() as $node) {
-            $value = self::getValue($node, ...$keys);
+        foreach ($keys as $key) {
+            $subkeys = explode('.', $key);
+
+            foreach ($graph->getNodes() as $node) {
+                $value = self::getValue($node, ...$subkeys);
 
-            if ($value) {
-                return $value;
+                if ($value) {
+                    return $value;
+                }
             }
         }