add isPublic to dashboard (#48012)

adds toggle to make a dashboard public

* config struct for public dashboard config
* api endpoints for public dashboard configuration
* ui for toggling public dashboard on and off
* load public dashboard config on share modal

Co-authored-by: Owen Smallwood <owen.smallwood@grafana.com>
Co-authored-by: Torkel Ödegaard <torkel@grafana.com>

pkg/services/dashboards/database/database.go

@@ -187,6 +187,47 @@ func (d *DashboardStore) SaveDashboard(cmd models.SaveDashboardCommand) (*models
 	return cmd.Result, err
 }
 
+// retrieves public dashboard configuration
+func (d *DashboardStore) GetPublicDashboardConfig(orgId int64, dashboardUid string) (*models.PublicDashboardConfig, error) {
+	var result []*models.Dashboard
+
+	err := d.sqlStore.WithTransactionalDbSession(context.Background(), func(sess *sqlstore.DBSession) error {
+		return sess.Where("org_id = ? AND uid= ?", orgId, dashboardUid).Find(&result)
+	})
+
+	if len(result) == 0 {
+		return nil, models.ErrDashboardNotFound
+	}
+
+	pdc := &models.PublicDashboardConfig{
+		IsPublic: result[0].IsPublic,
+	}
+
+	return pdc, err
+}
+
+// stores public dashboard configuration
+func (d *DashboardStore) SavePublicDashboardConfig(cmd models.SavePublicDashboardConfigCommand) (*models.PublicDashboardConfig, error) {
+	err := d.sqlStore.WithTransactionalDbSession(context.Background(), func(sess *sqlstore.DBSession) error {
+		affectedRowCount, err := sess.Table("dashboard").Where("org_id = ? AND uid = ?", cmd.OrgId, cmd.Uid).Update(map[string]interface{}{"is_public": cmd.PublicDashboardConfig.IsPublic})
+		if err != nil {
+			return err
+		}
+
+		if affectedRowCount == 0 {
+			return models.ErrDashboardNotFound
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &cmd.PublicDashboardConfig, nil
+}
+
 func (d *DashboardStore) UpdateDashboardACL(ctx context.Context, dashboardID int64, items []*models.DashboardAcl) error {
 	return d.sqlStore.WithTransactionalDbSession(ctx, func(sess *sqlstore.DBSession) error {
 		// delete existing items