server/public/ -- pre-requisite changes (#23278)

* invert depdendency: filestore -> model

* markdown: nolint:misspell

* inline jsonutils within model

* push model.GetInfoForBytes -> channels/app

* push channel/utils.CompileGo* -> plugin/utils

* push plugin/scheduler -> channels/jobs/plugins

* push utils.Copy(File|Dir) -> model

* oauthproiders/gitlab -> channels/app/oauthproviders/gitlab

* decouple plugin from einterfaces.MetricsInterface

* fix TestGetInfoForFile

* Revert "Run golangci in server CI (#23240)"

This reverts commit 349e5d4573.

* add model/utils

---------

Co-authored-by: Agniva De Sarker <agnivade@yahoo.co.in>

server/channels/app/plugin_api_test.go

@@ -27,11 +27,11 @@ import (
 
 	"github.com/mattermost/mattermost-server/server/v8/channels/app/request"
 	"github.com/mattermost/mattermost-server/server/v8/channels/einterfaces/mocks"
-	"github.com/mattermost/mattermost-server/server/v8/channels/utils"
 	"github.com/mattermost/mattermost-server/server/v8/channels/utils/fileutils"
 	"github.com/mattermost/mattermost-server/server/v8/model"
 	"github.com/mattermost/mattermost-server/server/v8/platform/shared/i18n"
 	"github.com/mattermost/mattermost-server/server/v8/plugin"
+	"github.com/mattermost/mattermost-server/server/v8/plugin/utils"
 )
 
 func getDefaultPluginSettingsSchema() string {