stream: encrypt cached stream data & clean up related modules

also limited CORS methods to GET and POST

src/modules/sub/utils.js

@@ -11,7 +11,6 @@ const apiVar = {
     },
     booleanOnly: ["isAudioOnly", "isNoTTWatermark", "isTTFullAudio", "isAudioMuted", "dubLang", "vimeoDash", "disableMetadata", "twitterGif"]
 }
-const forbiddenChars = ['}', '{', '(', ')', '\\', '>', '<', '^', '*', '!', '~', ';', ':', ',', '`', '[', ']', '#', '$', '"', "'", "@", '=='];
 const forbiddenCharsString = ['}', '{', '%', '>', '<', '^', ';', '`', '$', '"', "@", '='];
 
 export function apiJSON(type, obj) {