Grafana Alloy 1.3 release: Debug pipelines in real time

Grafana Alloy 1.3 introduces live debugging for real-time monitoring and troubleshooting of data pipelines. This feature, experimental in the current release, allows users to visualize data transformations, identify errors, and analyze pipeline behaviors. It can be enabled by adding a live debugging block in the config and setting the stability level to experimental. Supported components include loki.process, loki.relabel, otelcol.processor, otelcol.receiver, and prometheus.relabel. The previous requirement to build entire pipelines before checking data has been removed, allowing for step-by-step pipeline construction and verification.