Add option to disable tracking downvotes and clear when disabled

src/config.ts

@@ -22,6 +22,7 @@ interface SBConfig {
     fullVideoSegments: boolean,
     trackViewCount: boolean,
     trackViewCountInPrivate: boolean,
+    trackDownvotes: boolean,
     dontShowNotice: boolean,
     noticeVisibilityMode: NoticeVisbilityMode,
     hideVideoPlayerControls: boolean,
@@ -138,6 +139,7 @@ const Config: SBObject = {
         fullVideoSegments: true,
         trackViewCount: true,
         trackViewCountInPrivate: true,
+        trackDownvotes: true,
         dontShowNotice: false,
         noticeVisibilityMode: NoticeVisbilityMode.FadedForAutoSkip,
         hideVideoPlayerControls: false,