Add sample(s) for OIDC

All samples currently use publish profile both in this repo and the samples repo at https://github.com/Azure/actions-workflow-samples/tree/master/AppService.

There is one piece of sample code on how to use a service principal here https://github.com/Azure/webapps-deploy?tab=readme-ov-file#sample-workflow-to-build-and-deploy-a-nodejs-app-to-containerized-webapp-using-azure-service-principal

However using a service principal is not the recommended approach anymore for the azure-login command, the recommended approach is through OIDC: https://github.com/Azure/login?tab=readme-ov-file#login-with-openid-connect-oidc-recommended

Hence we should add samples that use this approach.