[SoundCloud] Fix client id extraction

SoundCloud changed their Javascript structure. That caused the client_id to be in the middle of the file (at byte ~43000 ). To have a little buffer, we now fetch the first 50000 bytes.

Author: TobiGr

extractor/src/main/java/org/schabi/newpipe/extractor/services/soundcloud/SoundcloudParsingHelper.java

@@ -67,7 +67,7 @@ public synchronized static String clientId() throws ExtractionException, IOExcep
         Collections.reverse(possibleScripts);
 
         final HashMap<String, List<String>> headers = new HashMap<>();
-        headers.put("Range", singletonList("bytes=0-16384"));
+        headers.put("Range", singletonList("bytes=0-50000"));
 
         for (Element element : possibleScripts) {
             final String srcUrl = element.attr("src");