[QDP] Add TensorFlow eager tensor input support with CPU/GPU detection

[rich7420]

Summary

This issue asks the ability to detect and handle TensorFlow eager tensors (TF 2.x +), focusing on tensor type detection, device identification, and CPU tensor conversion. This establishes the foundation for TensorFlow integration.

• add TensorFlow tensor detection utilities
• add tensor validation
• add cpu tensor path in encode_tf_tensor()
• error handling
• add some tests