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/status_test.go

@@ -0,0 +1,45 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestStatus(t *testing.T) {
+	status := Status{NewId(), StatusOnline, true, 0, "123", 0, ""}
+	js, err := status.ToJSON()
+	assert.NoError(t, err)
+	var status2 Status
+	err = json.Unmarshal(js, &status2)
+	assert.NoError(t, err)
+
+	assert.Equal(t, status.UserId, status2.UserId, "UserId should have matched")
+	assert.Equal(t, status.Status, status2.Status, "Status should have matched")
+	assert.Equal(t, status.LastActivityAt, status2.LastActivityAt, "LastActivityAt should have matched")
+	assert.Equal(t, status.Manual, status2.Manual, "Manual should have matched")
+	assert.Equal(t, "", status2.ActiveChannel)
+}
+
+func TestStatusListToJSON(t *testing.T) {
+	statuses := []*Status{{NewId(), StatusOnline, true, 0, "123", 0, ""}, {NewId(), StatusOffline, true, 0, "", 0, ""}}
+	jsonStatuses, err := StatusListToJSON(statuses)
+	assert.NoError(t, err)
+
+	var dat []map[string]any
+	if err := json.Unmarshal(jsonStatuses, &dat); err != nil {
+		panic(err)
+	}
+
+	assert.Len(t, dat, 2)
+
+	_, ok := dat[0]["active_channel"]
+	assert.False(t, ok)
+	assert.Equal(t, statuses[0].ActiveChannel, "123")
+	assert.Equal(t, statuses[0].UserId, dat[0]["user_id"])
+	assert.Equal(t, statuses[1].UserId, dat[1]["user_id"])
+}