pidgin/pidgin

Port Pidgin to the new PurpleConversationManager API

2021-06-14, Gary Kramlich
53fa03701534
Port Pidgin to the new PurpleConversationManager API

Testing Done:
Joined and chat and sent a message as well as a im.

Reviewed at https://reviews.imfreedom.org/r/750/
For information on translating Pidgin, libpurple, and Finch, please see
our wiki page at https://developer.pidgin.im/wiki/TipsForTranslators