[MM-26574] Add role filters to get users, users search and add getFilteredUserStats endpoint (#14998)

* MM-26574 Add role filters to user search and get

* Add ability to get filtered user stats

Add support for include bots

* Add tests for user count with filters

Add tests

* Apply changes from code review

* Fix guest filtering

* Fix up tests related to guests

* Clean role names

* Trigger CI

* Trigger CI

model/user_count.go

@@ -13,6 +13,14 @@ type UserCountOptions struct {
 	ExcludeRegularUsers bool
 	// Only include users on a specific team. "" for any team.
 	TeamId string
+	// Only include users on a specific channel. "" for any channel.
+	ChannelId string
 	// Restrict to search in a list of teams and channels
 	ViewRestrictions *ViewUsersRestrictions
+	// Only include users matching any of the given system wide roles.
+	Roles []string
+	// Only include users matching any of the given channel roles, must be used with ChannelId.
+	ChannelRoles []string
+	// Only include users matching any of the given team roles, must be used with TeamId.
+	TeamRoles []string
 }