This PR restructures the API endpoint that kicks off indexing jobs. A k8s cronjob has been added to the backend application so that it effectively acts as a manager for indexing jobs (checking for a running job and scheduling the next job if any exist).

• multiple graphrag indexing jobs can be submitted and the job manager will run each job in the order that they were submitted (based on time).
• small update to disable localAuth on CosmosDB
• small update to deployment script to check and remove an APIM instance if it is in a soft-deleted state. This prevents deployments from erroring out if a deployment is run in the same resource group again