ci: Add INT64 Datatype Support for Shape Tensors in TensorRT Backend

[pskiran1]

What does the PR do?

• Updated shape tensor model generation scripts to generate models with INT64 shape input data type.
• Renamed shape tensor model names to plan_*****<input_dtype>_<shape_input_dtype>.
• Updated L0_trt_shape_tensors to test models with INT64 shape input data type.

Checklist

• PR title reflects the change and is of format <commit_type>: <Title>
• Changes are described in the pull request.
• Related issues are referenced.
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Commit Type:

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• build
• ci
• docs
• feat
• fix
• perf
• refactor
• revert
• style
• test

Related PRs:

triton-inference-server/tensorrt_backend#91

Where should the reviewer start?

qa/common/gen_qa_dyna_sequence_models.py

Test plan:

• CI Pipeline ID: In progress

Caveats:

Background

• TensorRT version 10 and later supports the INT64 data type

Related Issues: (use one of the action keywords Closes / Fixes / Resolves / Relates to)

• closes GitHub issue: #xxx