Merge branch 'hotfix/GroupChatRefactor' into 'release'

cmd/group.go

groupChat/e2eManager_test.go

groupChat/interface.go

groupChat/makeGroup.go

groupChat/makeGroup_test.go

groupChat/manager.go

groupChat/manager_test.go

groupChat/messenger_test.go

groupChat/networkManager_test.go

groupChat/receive.go

groupChat/receiveRequest.go

groupChat/receiveRequest_test.go

groupChat/send.go

groupChat/sendRequests.go

groupChat/sendRequests_test.go

groupChat/send_test.go

groupChat/service.go

groupChat/session_test.go

groupChat/utils_test.go