feat: add tensor-like TensorView constructor

[voltjia]

Summary

• Add a templated TensorView constructor for tensor-like objects in src/tensor_view.h.
• The constructor reads data(), shape(), dtype(), device(), and strides() from the external tensor-like object.
• This keeps InfiniRT as a view layer while letting InfiniOps convert caller-owned tensors to TensorView without ad hoc field-by-field construction.

Motivation

InfiniOps returning-style operator APIs need to allocate outputs through an external tensor type and then call the existing in-place operator implementation. A tensor-like TensorView constructor keeps that conversion centralized in InfiniRT instead of duplicating conversion helpers in InfiniOps.

Closes N/A.

Type of Change

• feat — new feature / new operator / new platform
• fix — bug fix
• perf — performance improvement (no behavioral change)
• refactor — code restructuring without behavior change
• test — adding or fixing tests only
• docs — documentation only
• build / ci — build system or CI configuration
• chore — tooling, formatting, or other non-code changes
• Breaking change (requires a ! in the Conventional Commits prefix or a BREAKING CHANGE: footer)

Platforms Affected

• CPU (WITH_CPU)
• NVIDIA (WITH_NVIDIA)
• Iluvatar (WITH_ILUVATAR)
• MetaX (WITH_METAX)
• Cambricon (WITH_CAMBRICON)
• Moore (WITH_MOORE)
• Ascend (WITH_ASCEND)
• PyTorch C++ bindings (WITH_TORCH)
• Build system / CMake / CI
• Python bindings / user-facing API

Smoke Test Result

Validated through InfiniOps #761 with this InfiniRT branch mounted as INFINI_RT_SOURCE_DIR:

$ python -m pip install .[dev] --no-build-isolation \
    -C cmake.define.INFINI_RT_SOURCE_DIR=/workspace/InfiniRT \
    -C cmake.define.INFINI_OPS_SMOKE_BUILD=ON \
    -C cmake.define.AUTO_DETECT_BACKENDS=OFF \
    -C cmake.define.WITH_TORCH=OFF
Successfully built InfiniOps
Successfully installed InfiniOps-0.1.0

$ python -m pytest -v --tb=short --junitxml=/workspace/results/test-results.xml tests/test_cpp_api.py
collected 2 items

tests/test_cpp_api.py::test_cpp_operator_call_instantiation_smoke PASSED [ 50%]
tests/test_cpp_api.py::test_cpp_returning_call_smoke PASSED              [100%]

============================== 2 passed in 2.55s ===============================

Test Results on Supported Platforms

Platform	Affected	Build / Smoke Result	Full Result / Notes
NVIDIA	Yes	smoke passed	Validated through InfiniOps #761 external C++ API smoke.
Iluvatar	No	N/A - not affected	Not tested.
MetaX	No	N/A - not affected	Not tested.
Cambricon	No	N/A - not affected	Not tested.
Moore	No	N/A - not affected	Not tested.
Ascend	No	N/A - not affected	Not tested.

Full `pytest` output (optional)

See smoke output above.

Benchmark / Performance Impact

N/A. This adds a convenience constructor for view construction and does not change runtime execution paths.

Notes for Reviewers

• Required by feat: add minimal returning calls for Add and Gemm InfiniOps#761.
• The validation compiles an external temporary C++ source against installed InfiniOps headers and links -linfiniops -linfinirt, exercising this constructor through the public API path.