[onnx2circle] Add option to list supported operators

[arkq]

This commit adds --list-operators option to the onnx2circle tool which lists all supported ONNX operators with their opset numbers. Such list should help in ONNX model operators conversion in case when converted model uses not supported operators versions.

$ onnx2circle --list-operators
AveragePool-1
AveragePool-7
AveragePool-10
Conv-1
...
MaxPool-1
MaxPool-8
MaxPool-10
...

$ onnx2circle model.onnx model.circle
The following operators are not supported:
Conv-11
MaxPool-11
Resize-11

[Copilot]

Pull request overview

This PR adds a --list-operators option to the onnx2circle tool that prints all supported ONNX operators with their opset versions. It also refactors the NodeConverterRegistry API to use a structured Operator type (a std::pair<std::string, unsigned int>) instead of separate name/opset parameters.

Changes:

• Introduces NodeConverterRegistry::Operator type alias and updates lookup/registerConverter signatures accordingly
• Adds getRegisteredOperators() and getSupportedOperators() functions to expose the list of supported ops
• Adds --list-operators CLI option in onnx2circle.cpp

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
compiler/onnx2circle/src/onnx2circle.cpp	Adds --list-operators argument handling and help text
compiler/mir/src/mir_onnx_importer/ONNXNodeConverterRegistry.h	Introduces Operator type alias; updates method signatures
compiler/mir/src/mir_onnx_importer/ONNXNodeConverterRegistry.cpp	Implements updated signatures and new getRegisteredOperators()
compiler/mir/src/mir_onnx_importer/ONNXOpRegistration.h	Updates REG_CONVERTER macro to pass Operator struct
compiler/mir/src/mir_onnx_importer/ONNXImporterImpl.cpp	Adds getSupportedOps() and public getSupportedOperators()
compiler/mir/include/mir_onnx_importer/ONNXImporterImpl.h	Declares public getSupportedOperators()
compiler/mir/src/mir_onnx_importer/ONNXNodeConverterRegistry.test.cpp	Updates tests to new API; adds registered_ops test

Comments suppressed due to low confidence (1)

compiler/mir/src/mir_onnx_importer/ONNXNodeConverterRegistry.test.cpp:28

• Corrected spelling of 'Regsitry' to 'Registry'.

class NodeConverterRegsitryTest : public ::testing::Test

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[arkq]

Closing this PR because the ‎compiler/onnx2circle module is deprecated.