[New Exercise] New Digit Classification Exercise using Deep Learning

[codezerro]

📌 Summary

This PR adds a new exercise titled “New Digit Classification Exercise using Deep Learning” to the RoboticsAcademy platform. The exercise enables users to classify using a deep learning model (ONNX files).

📂 Key Features

• ✅ Inference using a pre-trained ONNX model
• ✅ Real-time prediction display with class label

Closes #3118

[javizqh]

Works fine