MQTT update+

[tipatterson-dev]

• Add improved support for MQTT
• Clean up a few top level functions for clarity
• implement more async routines for performance
• begin codebase reorganization for planned UX improvements

[Copilot]

Pull Request Overview

This PR implements improved MQTT support and begins a significant codebase reorganization. It introduces a new streamable resource architecture, consolidates data models, and cleans up the module structure for planned UX improvements.

• Introduces new streamable resource system with websocket and MQTT connectivity
• Consolidates scattered data models into unified modules
• Removes numerous deprecated API helper modules and restructures imports

Reviewed Changes

Copilot reviewed 46 out of 55 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
src/oshconnect/streamableresource.py	New comprehensive module implementing the streamable resource architecture with Node, System, Datastream classes
src/oshconnect/schema_datamodels.py	Consolidated schema data models from multiple scattered modules
src/oshconnect/resource_datamodels.py	Unified resource data models replacing core_datamodels.py
tests/	Updated test files with new import paths and test structure
src/oshconnect/csapi4py/	Various updates to API helpers and MQTT client improvements

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