[core] Util to set (auto) names on model's input, output tensors

[praasz]

Details:

• Add utils to core to set names on model input/output tensors
• Define default tensor names and port separator
• Use auto naming in model created by python API. Model outputs will have got names also.
• The auto naming can be part of Model API but requires to add validation tools to find and resolve names collision
• Auto naming cannot be added to Model creation in C++ as it can have impact on (de)serialization, requires more investigation

Tickets:

• CVS-159997