Add Deepgram SDK SageMaker smoke tests

[pcgeek86]

Summary

• add SDK-based smoke scripts for STT, Flux, and TTS SageMaker endpoints
• add Deepgram SDK and SageMaker transport dependencies to Python subprojects
• document usage in the root and Python project READMEs

Verification

• uv run python -m py_compile stt_sdk.py
• uv run python -m py_compile flux_sdk.py
• uv run python -m py_compile tts_sdk.py
• uv run stt_sdk.py --help
• uv run flux_sdk.py --help
• uv run tts_sdk.py --help
• deployed latest Flux model package in us-east-2 and ran flux_sdk.py successfully against a temporary endpoint

[pcgeek86]

• Tested the Flux w/ DG SDK client script against Flux Multi Model Package. It's using 7.x version (just released) of Deepgram's Python SDK.

Results:

PS /Users/trev/git/dg-sagemaker/python-flux> uv run flux_sdk.py dg-flux-sdk-20260429-215325 --file /Users/trev/2025-12-15-aeris-story.16khz.wav --region us-east-2 --model flux-general-multi --drain-seconds 5
Streaming /Users/trev/2025-12-15-aeris-story.16khz.wav to dg-flux-sdk-20260429-215325 (16000 Hz, 80 ms Flux chunks)
Connection opened
[event] connected
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[Update turn=0] dans
[StartOfTurn turn=0] The more
[Update turn=0] The morning's
[Update turn=0] The morning sun
[Update turn=0] The morning sun
[Update turn=0] The morning sun filter
[Update turn=0] The morning sun filtered
[Update turn=0] The morning sun filtered through the
[Update turn=0] The morning sun filtered through the Russell
[Update turn=0] The morning sun filtered through the rustling
[Update turn=0] The morning sun filtered through the rustling leaves
[Update turn=0] The morning sun filtered through the rustling leaves of
[Update turn=0] The morning sun filtered through the rustling leaves of the
[Update turn=0] The morning sun filtered through the rustling leaves of the second
[Update turn=0] The morning sun filtered through the rustling leaves of the sector
[Update turn=0] The morning sun filtered through the rustling leaves of the sector five
[Update turn=0] The morning sun filtered through the rustling leaves of the sector five slow
[Update turn=0] The morning sun filtered through the rustling leaves of the sector five slums
[Update turn=0] The morning sun filtered through the rustling leaves of the sector five slums,
[Update turn=0] The morning sun filtered through the rustling leaves of the sector five slums,
[Update turn=0] The morning sun filtered through the rustling leaves of the sector five slums, can't
[Update turn=0] The morning sun filtered through the rustling leaves of the sector five slums, cast
[Update turn=0] The morning sun filtered through the rustling leaves of the sector five slums, cast down
[Update turn=0] The morning sun filtered through the rustling leaves of the sector five slums, cast dabble
[Update turn=0] The morning sun filtered through the rustling leaves of the sector five slums, cast dappled
[Update turn=0] The morning sun filtered through the rustling leaves of the sector five slums, cast dappled light
[Update turn=0] The morning sun filtered through the rustling leaves of the sector five slums, cast dappled light