Expose public/ API as submodule (#23345)

* model -> public/model

* plugin -> public/plugin

* public/model/utils -> public/utils

* platform/shared/mlog -> public/shared/mlog

* platform/shared/i18n -> public/shared/i18n

* platform/shared/markdown -> public/shared/markdown

* platform/services/timezones -> public/shared/timezones

* channels/einterfaces -> einterfaces

* expose public/ submodule

* go mod tidy

* .github: cache-dependency-path, setup-go-work

* modules-tidy for public/ too

* remove old gomodtidy

server/public/model/user_count.go

@@ -0,0 +1,26 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package model
+
+// Options for counting users
+type UserCountOptions struct {
+	// Should include users that are bots
+	IncludeBotAccounts bool
+	// Should include deleted users (of any type)
+	IncludeDeleted bool
+	// Exclude regular users
+	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
+}