[xExtension-YouTube] Add referrer policy to iframe in extension.php (#382)

* [xExtension-YouTube] Add referrer policy to iframe in extension.php

I've been seeing Error 153 / Video player configuration error just like reported here:
https://forum.obsidian.md/t/youtube-video-embed-does-not-work-video-player-configuration-error/103181

Added referrer policy as taken from youtube embed iframe via share button on youtube.com, seems to be working nicely.

* Bump version

---------

Co-authored-by: Alexandre Alapetite <alexandre@alapetite.fr>

Author: QrchackOfficial

xExtension-YouTube/extension.php

@@ -444,6 +444,7 @@ public function getHtml(FreshRSS_Entry $entry, string $url): string {
 				height="' . $this->height . '"
 				src="' . $url . '"
 				frameborder="0"
+				referrerpolicy="strict-origin-when-cross-origin"
 				allowFullScreen></iframe>';
 
 		if ($this->showContent) {

xExtension-YouTube/metadata.json

@@ -2,7 +2,7 @@
 	"name": "YouTube Video Feed",
 	"author": "Kevin Papst, Inverle",
 	"description": "Embed YouTube feeds inside article content.",
-	"version": "1.0.0",
+	"version": "1.1.0",
 	"entrypoint": "YouTube",
 	"type": "user"
 }