feat(api): Add top-level API for getting scopes#2988

sentrivana wants to merge 4 commits intosentry-sdk-2.0getsentry/sentry-python:sentry-sdk-2.0from

ivana/2.0/top-level-api-scopesgetsentry/sentry-python:ivana/2.0/top-level-api-scopesCopy head branch name to clipboard