Add TG execution adapter integration

[rzaravnyaev]

Summary

• add TGExecutionAdapter to call the TG strategies trade API with validation, SL/TP normalization, and timeout handling
• expose cancel/close helpers and register the new adapter service
• include the adapter in the services loader configuration

Testing

• not run (not requested)

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Codex Task

[chatgpt-codex-connector]

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