The goal is to expose the custom metrics functionality in the Python SDK. As this functionality is internal only for dogfooding, it needs to be sufficiently hidden from end users for now.
### Tasks
- [ ] https://github.com/getsentry/sentry-python/issues/2374
- [ ] https://github.com/getsentry/sentry/issues/55645
- [x] Switch sentry to internal preview/git release of metrics enabled sentry-python
- [ ] https://github.com/getsentry/sentry-python/issues/2380
The goal is to expose the custom metrics functionality in the Python SDK. As this functionality is internal only for dogfooding, it needs to be sufficiently hidden from end users for now.