pidgin/pidgin

Port some of conversation to GTK4
gtk4
22 months ago, Elliott Sales de Andrade
c8a09956bac2
Port some of conversation to GTK4

This leaves out menu bits for the member list.

Testing Done:
Compile only

Reviewed at https://reviews.imfreedom.org/r/1614/
REVIEWBOARD_URL = "https://reviews.imfreedom.org/"
REPOSITORY = "pidgin/pidgin"
REPOSITORY_TYPE = "mercurial"
BRANCH = "gtk4"
LAND_DEST_BRANCH = "gtk4"
LAND_PUSH = False