[New Data Source]: agno-natsjetstream-datasource

### Background i have created one new plugin that connect nats port directly to grafana ### Use case i have created a dummy app that generated fake datasource that will receive data in NATS port from the that should be passed to grafana native plugin and connects to make dashboard ### Contribution - [x] Are you looking to create the plugin? - [x] Are you affiliated with the project/product the data source integrates with? - [x] Does the plugin integrate with a commercial product?