Imports of middleware command

PathSynopsis
github.com/prometheus/client_golang/examples/middleware/httpmiddlewarePackage httpmiddleware is adapted from https://github.com/bwplotka/correlator/tree/main/examples/observability/ping/pkg/httpinstrumentation
github.com/prometheus/client_golang/prometheusPackage prometheus is the core instrumentation package.
github.com/prometheus/client_golang/prometheus/collectorsPackage collectors provides implementations of prometheus.Collector to conveniently collect process and Go-related metrics.
github.com/prometheus/client_golang/prometheus/promhttpPackage promhttp provides tooling around HTTP servers and clients.
logPackage log implements a simple logging package.
net/httpPackage http provides HTTP client and server implementations.