Introducing the Flags Explorer, first-party integrations, and updates to the Flags SDK

This post introduces the general availability of the Flags Explorer in the Vercel Toolbar, allowing direct management and session-specific overrides of feature flags. It also announces the new Experimentation category on the Vercel Marketplace, featuring integrations like Statsig, which offers low-latency flag evaluation by syncing flags into Vercel's Edge Config. Updates to the open-source Flags SDK include a new adapter architecture for connecting to multiple providers, exemplified by the `@flags-sdk/statsig` package that enables managing Statsig flags within the Vercel Flags Explorer.