[codex] Split MarketDataRouter and add staged lifecycle stack

[LimiNode]

Summary

• keep the public Router declarations and public subscription types in MarketDataRouter.hpp
• move the private Router state and inline definitions to market_data/detail/MarketDataRouter.ipp
• add the optional ILifecycleModule and LifecycleStack supervisor for staged module processing and reverse-order shutdown
• integrate lifecycle processing with BaseTradingPlatform and MarketDataRouter
• document the lifecycle contract in English and Russian, with runnable examples and regression tests
• keep the public market-data aggregate independent from the broad HTTP/curl utility aggregate

This PR includes the lifecycle-stack changes from the merged #156 commit, so it is intentionally a functional integration PR rather than a mechanical two-file refactor.

Verification

• Ubuntu Smoke passed at the current HEAD
• Windows Smoke passed at the current HEAD
• lifecycle_stack_test and lifecycle_stack_example built and ran on both platforms
• market-data Router, Hub, SubscriberBase, subscription-contract, and lifecycle safety tests passed
• market-data Router and SubscriberBase examples ran successfully
• git diff --check

Stack

Depends on #154 (feat/market-data-router-dispatch). The Router split and staged lifecycle integration are reviewed together because the current branch contains both changes.