Add Google site verification meta tag

Author: SirStig

docs/index.html

@@ -10,6 +10,7 @@
     <meta name="keywords" content="ffmpeg gui, video converter, batch video encoding, hardware acceleration, nvenc, quicksync, amd amf, ai subtitles, whisper, opensubtitles, media file renaming, tmdb, tvdb, plex, jellyfin, handbrake alternative, video transcoding, free video converter">
     <meta name="author" content="SirStig">
     <meta name="robots" content="index, follow">
+    <meta name="google-site-verification" content="RIOaUMRPamkcAi8F9CDYwN8G_96qdL7xl472KrvVRWM" />
 
     <!-- Open Graph / Facebook -->
     <meta property="og:type" content="website">