feat: add ConversationDeleteTips. (openimsdk#195)

fix: update method name. (openimsdk#194)

* feat: add DelConversations method.

* fix: update method name.

feat: add DelConversations method. (openimsdk#193)

update GetExistingToken parameter. (openimsdk#192)

feat: add getexistingToken rpc. (openimsdk#191)

feat: optimize friend and group applications

feat: optimize friend and group applications

feat: optimize friend and group applications

feat: optimize friend and group applications

fix: add updateUserInfoEx Check. (openimsdk#189)