feat: add chart for wg-access-server

wg-access-server/Chart.yaml

wg-access-server/pipeline.yml

wg-access-server/templates/_helpers.tpl

wg-access-server/templates/configmap.yaml

wg-access-server/templates/deployment.yaml

wg-access-server/templates/ingress.yaml

wg-access-server/templates/secret.yaml

wg-access-server/templates/service.yaml

wg-access-server/values.yaml