Add generic links to app-to-web

This Cl does the following:
1. Creates a build-time and server side list of generic links
2. Creates a flag which determins which list will be used
3. Creates a parser to retrieve said list and parse it into a Hashmap,
   mapping package names to urls
4. When a user clicks on the "Open in browser" button in the handle
   menu, opens the generic link if captured link is unavailable or
   expired

Bug: 349695493
Test: Use open in browser button in header menu + atest
AppToWebGenericLinksParserTests
Flag: com.android.window.flags.enable_desktop_windowing_app_to_web

Change-Id: Ibbd8c21b95679125e3c480d0430b9d473110fdbb