Adds video attention time tracking function to videos service

Author: SHession

.changeset/lovely-words-rule.md

@@ -0,0 +1,5 @@
+---
+"@guardian/bridget": minor
+---
+
+Adds video attention time tracking function to videos service

thrift/native.thrift

@@ -186,7 +186,14 @@ service Gallery {
 service Videos {
     void insertVideos(1:list<VideoSlot> videoSlots),
     void updateVideos(1:list<VideoSlot> videoSlots),
+    /*
+    * This method is used to submit media tracking events for videos from the web layer.
+    * */
     void sendVideoEvent(1:VideoEvent videoEvent),
+    /*
+    * This method is used to submit component attention time tracking updates for videos from the web layer.
+    * */
+    void sendVideoAttentionTime(1:map<string, i64> componentAttentionMs),
     /**
      * This method is used by the web layer to instruct the native layer to activate or deactivate fullscreen mode
      * This is currently only required for Android as the fullscreen control on the YouTube player in Android webviews is a no-op