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/platform/services/telemetry/mocks/ServerIface.go

@@ -10,9 +10,9 @@ import (
 	httpservice "github.com/mattermost/mattermost-server/server/v8/platform/services/httpservice"
 	mock "github.com/stretchr/testify/mock"
 
-	model "github.com/mattermost/mattermost-server/server/v8/model"
+	model "github.com/mattermost/mattermost-server/server/public/model"
 
-	plugin "github.com/mattermost/mattermost-server/server/v8/plugin"
+	plugin "github.com/mattermost/mattermost-server/server/public/plugin"
 
 	product "github.com/mattermost/mattermost-server/server/v8/channels/product"
 )

server/platform/services/telemetry/telemetry.go

@@ -14,15 +14,15 @@ import (
 
 	rudder "github.com/rudderlabs/analytics-go"
 
+	"github.com/mattermost/mattermost-server/server/public/model"
+	"github.com/mattermost/mattermost-server/server/public/plugin"
+	"github.com/mattermost/mattermost-server/server/public/shared/mlog"
 	"github.com/mattermost/mattermost-server/server/v8/channels/product"
 	"github.com/mattermost/mattermost-server/server/v8/channels/store"
 	"github.com/mattermost/mattermost-server/server/v8/channels/utils"
-	"github.com/mattermost/mattermost-server/server/v8/model"
 	"github.com/mattermost/mattermost-server/server/v8/platform/services/httpservice"
 	"github.com/mattermost/mattermost-server/server/v8/platform/services/marketplace"
 	"github.com/mattermost/mattermost-server/server/v8/platform/services/searchengine"
-	"github.com/mattermost/mattermost-server/server/v8/platform/shared/mlog"
-	"github.com/mattermost/mattermost-server/server/v8/plugin"
 )
 
 const (

server/platform/services/telemetry/telemetry_test.go

@@ -21,16 +21,16 @@ import (
 	"github.com/stretchr/testify/mock"
 	"github.com/stretchr/testify/require"
 
+	"github.com/mattermost/mattermost-server/server/public/model"
+	"github.com/mattermost/mattermost-server/server/public/plugin"
+	"github.com/mattermost/mattermost-server/server/public/plugin/plugintest"
+	"github.com/mattermost/mattermost-server/server/public/shared/mlog"
 	"github.com/mattermost/mattermost-server/server/v8/channels/product"
 	storeMocks "github.com/mattermost/mattermost-server/server/v8/channels/store/storetest/mocks"
 	"github.com/mattermost/mattermost-server/server/v8/config"
-	"github.com/mattermost/mattermost-server/server/v8/model"
 	"github.com/mattermost/mattermost-server/server/v8/platform/services/httpservice"
 	"github.com/mattermost/mattermost-server/server/v8/platform/services/searchengine"
 	"github.com/mattermost/mattermost-server/server/v8/platform/services/telemetry/mocks"
-	"github.com/mattermost/mattermost-server/server/v8/platform/shared/mlog"
-	"github.com/mattermost/mattermost-server/server/v8/plugin"
-	"github.com/mattermost/mattermost-server/server/v8/plugin/plugintest"
 )
 
 type FakeConfigService struct {