Move team related functions to service layer (#32537)

There are still some functions under `models` after last big refactor
about `models`. This change will move all team related functions to
service layer with no code change.

services/repository/repo_team_test.go

@@ -0,0 +1,34 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package repository
+
+import (
+	"testing"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/organization"
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/models/unittest"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestTeam_AddRepository(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+
+	testSuccess := func(teamID, repoID int64) {
+		team := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: teamID})
+		repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: repoID})
+		assert.NoError(t, TeamAddRepository(db.DefaultContext, team, repo))
+		unittest.AssertExistsAndLoadBean(t, &organization.TeamRepo{TeamID: teamID, RepoID: repoID})
+		unittest.CheckConsistencyFor(t, &organization.Team{ID: teamID}, &repo_model.Repository{ID: repoID})
+	}
+	testSuccess(2, 3)
+	testSuccess(2, 5)
+
+	team := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: 1})
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
+	assert.Error(t, TeamAddRepository(db.DefaultContext, team, repo))
+	unittest.CheckConsistencyFor(t, &organization.Team{ID: 1}, &repo_model.Repository{ID: 1})
+}