Draft: Add profiling features for onnx cleaner

Context

Related to aidge_onnx#83. Enhances TensorRT export module with comparative analysis of raw and cleaned models using ONNX cleaner and other frameworks.

Current limitations: external modules (aidge_onnx/onnxsim/onnxslim) should be installed in the running container for now.

Current changes

• Profiling API: Added getProfileData() and getAverageExecutionTime() methods to Graph class
• Enhanced test script: automated model performance comparison against multiple cleaners (onnx cleaner, onnxsim, onnxslim) with rich output
• Docker integration: Added CLI parameters to test target

Next steps - Docker containerization

Currently, aidge_onnx (and dependancies) are installed directly in the running container using a mounted aidge local repository.

TODO

• Profiling API
• Basic compare script
• Integration strategy decision
• Clean docker installation
• Unit tests
• Documentation and examples