Add videoId as a parameter to NetworkReporter

Summary:
Context
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I am creating a flipper plugin to track and show network requests in a waterfall display to help IG App developers

See this [GSD](https://www.internalfb.com/gsd/316319693088236/791974585995443/list?t=189784262) for more context

FarAndHeight recommended a powersearching feature that woulda llow users to highlight individual requests.  dawidcieslak recommended a feature that would allow users to isolate media of a specific media-id. I plan to combine both of these features by storing the media-id of video requests and using the powersearch to allow for isolating requests that have a specific media id.

This Diff
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This diff modifies `NetworkReporter.java`, which contains the type information used for request information sent to the desktop, to include a videoId parameter. If no videoId is passed in, the videoId parameter is defaulted to null.

Differential Revision: D59925835

fbshipit-source-id: 98acc56b31d495d246db3bef13b3b45a09f9c882

android/plugins/network/src/main/java/com/facebook/flipper/plugins/network/NetworkReporter.java

@@ -38,6 +38,7 @@ public class RequestInfo {
     public String method;
     public String uri;
     public byte[] body;
+    public String videoId = null;
 
     public Header getFirstHeader(final String name) {
       for (Header header : headers) {