Add versioned output schemas

[besendorf]

Summary

• add a versioned public Pydantic schema package for module results, alerts, URLs, run metadata, hashes, and timeline records
• validate JSON output at module save/load and command aggregation boundaries
• register output shapes for every built-in Android and iOS module, including the detailed tombstone model
• expose Draft 2020-12 schemas through the Python API and new mvt-ios schemas / mvt-android schemas commands
• document schema versioning and custom-module output_model declarations

Compatibility

Existing module JSON root shapes remain unchanged. Mapping-based modules retain object roots, record-based modules retain array roots, and custom modules without an explicit model use a warned compatibility schema.

[github-actions]

Tests	Skipped	Failures	Errors	Time
267	1 💤	0 ❌	0 🔥	12.114s ⏱️