Implement some team endpoints for APIv4 (#5745)

* Implement PUT /teams/{team_id} endpoint for APIv4

* Implement GET /users/{user_id}/teams/{team_id}/unread endpoint for APIv4

* Implement POST /teams/{team_id}/members/ids endpoint for APIv4

* Remove debug statement

store/store.go

@@ -77,7 +77,8 @@ type TeamStore interface {
 	GetTotalMemberCount(teamId string) StoreChannel
 	GetActiveMemberCount(teamId string) StoreChannel
 	GetTeamsForUser(userId string) StoreChannel
-	GetTeamsUnreadForUser(teamId, userId string) StoreChannel
+	GetChannelUnreadsForAllTeams(excludeTeamId, userId string) StoreChannel
+	GetChannelUnreadsForTeam(teamId, userId string) StoreChannel
 	RemoveMember(teamId string, userId string) StoreChannel
 	RemoveAllMembersByTeam(teamId string) StoreChannel
 	RemoveAllMembersByUser(userId string) StoreChannel