MongoDB Explain Compat

Converts MongoDB SBE (Slot-Based Execution) explain output to the format used by MongoDB 4.4 explain, enabling compatibility for tools and applications that expect the older format. Current stable version is 3.3.33, released as part of the MongoDB Compass ecosystem. This package provides a best-effort conversion that is close enough for practical use, but not an exact match. It is a lightweight, focused utility for MongoDB developers and tools that need to interpret SBE explain plans.