Adding validation against Dolby vision files

Done more testing & confirmed, dolby vision files are normally not converted properly so we'll filter these out now.
The output usually doesn't have evident issues, it's only when tested on a Dolby vision TV that issues present & it's highly dependant on the source material.
i.e I think if the file has the correct HDR10 fallback info then it will play fine on a Dolby vision TV (just can't play Dovi proper), but a lot of files I've had don't have this info & after conversion the Dovi TV will display a pink blown out version.
It'll be better to just prevent Dovi conversions & I guess there's the question of why compress a Dovi file? I don't think it fits the work flow of a bitrate based re-encode.

Community/Tdarr_Plugin_bsh1_Boosh_FFMPEG_QSV_HEVC.js

@@ -633,9 +633,10 @@ const plugin = (file, librarySettings, inputs, otherArguments) => {
           hdrEnabled = true;
         }
 
-        // Had at least one case where a file contained no evident HDR data but was marked as HDR content
-        // meaning transcode OR plex would butcher the file
+        // VALIDATE HDR - Ignore Dolby vision & badly formatted files
         if (hdrEnabled !== true) {
+          // Had at least one case where a file contained no evident HDR data but was marked as HDR content
+          // meaning transcode OR plex would butcher the file
           try {
             if (typeof file.mediaInfo.track[i + 1].HDR_Format !== 'undefined') {
               response.infoLog += '==ERROR== This file has Media data implying it is HDR '
@@ -647,6 +648,19 @@ const plugin = (file, librarySettings, inputs, otherArguments) => {
           } catch (err) {
             // Catch error - Ignore & carry on - If check can bomb out if tags don't exist...
           }
+        } else {
+          // If specifically marked Dolby Vision
+          try {
+            if (file.mediaInfo.track[i + 1].HDR_Format.search('Dolby Vision') >= 0) {
+              response.infoLog += '==ERROR== This file has Media data implying it is Dolby Vision '
+                + `(${file.mediaInfo.track[i + 1].HDR_Format}), `
+                + 'Currently we cannot safely convert this HDR format and retain the Dolby Vision format. '
+                + 'Aborting!\n';
+              return response;
+            }
+          } catch (err) {
+            // Catch error - Ignore & carry on - If check can bomb out if tags don't exist...
+          }
         }
 
         // Check if codec of stream is HEVC, Vp9 or AV1