Implement GitHub Projects

### Problem Statement We have multiple private GitHub projects that contain issues for one or more repositories (for example a general "support" project). When adding an issue to GitHub in Sentry, it's not possible to immediately link the issue to one or multiple projects. ### Solution Brainstorm It would be cool to be able to directly link the issue to one or multiple projects in the Sentry popup. Ideally even set a status per project. ### Product Area Issues We want to define a set of [lightweight metrics](<https://docs.sentry.io/product/explore/metrics/>) that SDKs can automatically collect for e.g. framework, language or platform, focusing only on signals that **do NOT overlap with Tracing**. Ideally these metrics should give a quick sense of app or runtime health, … while deeper investigation will still rely on traces or profiles.<br><br>Examples**:** * Node.js runtime metrics (e.g., event loop delay, heap usage) * Prisma-related metrics in Next.js * Mobile CPU / memory usage to help surface potential ANRs or app hangs --- **Candidate Metrics (add more below)** * … *(please also add ideas, questions or examples in comments)*