promtool push metrics

This release introduces new PromQL functions like `start_timestamp`, enhances service discovery with OCI support, and includes numerous performance improvements and bug fixes across TSDB, scraping, and remote write functionalities. It also deprecates certain `stats` query parameter values for future removal.

This release stabilizes Native Histograms as an optional feature, requiring explicit configuration via `scrape_native_histograms`, and introduces several performance enhancements and bug fixes across PromQL and the UI. It also updates the Remote-write 2 specification adherence.

This release stabilizes Native Histograms as an optional feature, requiring explicit configuration via `scrape_native_histogram`. It also introduces several performance improvements across the UI and PromQL, alongside unified AWS service discovery.