Rename tutorials

[yutong-xiang-97]

What has changed and why?

• Rename the object detection export tutorial to use the LTDETRv2 name.
• Use ltdetrv2-s-coco as its default model and update the corresponding API links.
• Remove “Monocular” from the Depth Anything V3 tutorial title.
• Add model-family suffixes to the EoMT and Depth Anything V3 export tutorial titles.
• Rename the EoMT segmentation export notebooks with an eomt_ prefix.
• Update all affected toctree entries, Colab links, and documentation references.
• Rename the export tutorial section to ONNX & TENSORRT EXPORT TUTORIALS.

How has it been tested?

Tutorials - LightlyTrain documentation.pdf

Did you update CHANGELOG.md?

• Yes
• Not needed (internal change)

Did you update the documentation?

• Yes
• Not needed (internal change without effects for user)

[yutong-xiang-97]

/review

[chatgpt-codex-connector]

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[mrpositron]

LGTM 🚀

[chatgpt-codex-connector]

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Reviewed commit: afac9f0165

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