Initial team service implementation (#18279)

* initial service implementation

* reflect review comments

app/server.go

@@ -40,6 +40,7 @@ import (
 	"github.com/mattermost/mattermost-server/v6/app/featureflag"
 	"github.com/mattermost/mattermost-server/v6/app/imaging"
 	"github.com/mattermost/mattermost-server/v6/app/request"
+	"github.com/mattermost/mattermost-server/v6/app/teams"
 	"github.com/mattermost/mattermost-server/v6/app/users"
 	"github.com/mattermost/mattermost-server/v6/audit"
 	"github.com/mattermost/mattermost-server/v6/config"
@@ -155,6 +156,7 @@ type Server struct {
 
 	telemetryService *telemetry.TelemetryService
 	userService      *users.UserService
+	teamService      *teams.TeamService
 
 	serviceMux           sync.RWMutex
 	remoteClusterService remotecluster.RemoteClusterServiceIFace
@@ -428,6 +430,19 @@ func NewServer(options ...Option) (*Server, error) {
 		return nil, errors.Wrapf(err, "unable to create users service")
 	}
 
+	s.teamService, err = teams.New(teams.ServiceConfig{
+		TeamStore:    s.Store.Team(),
+		ChannelStore: s.Store.Channel(),
+		GroupStore:   s.Store.Group(),
+		Users:        s.userService,
+		WebHub:       s,
+		ConfigFn:     s.Config,
+		LicenseFn:    s.License,
+	})
+	if err != nil {
+		return nil, errors.Wrapf(err, "unable to create teams service")
+	}
+
 	s.configListenerId = s.AddConfigListener(func(_, _ *model.Config) {
 		s.configOrLicenseListener()