UI: Add per-profile browser panel cookie management

Allows the ability to switch cookies between profiles.  Allows the
ability to, for example, switch streaming service accounts between
profiles for proper access to the pages displayed by the browser panels
(such as chat windows).

UI/CMakeLists.txt

@@ -140,6 +140,7 @@ set(obs_SOURCES
 	window-basic-main-transitions.cpp
 	window-basic-main-dropfiles.cpp
 	window-basic-main-profiles.cpp
+	window-basic-main-browser.cpp
 	window-basic-status-bar.cpp
 	window-basic-adv-audio.cpp
 	window-basic-transform.cpp