docs: update all YOLOv8 references to Conditional DETR

Docs: update README and notebook guides to reflect 9 Gradio tabs and Lab 08

Docs: aggiungi note tecniche su SigNet e EasyOCR/TrOCR

Update demo checklists and notebooks guide for Lab 08 integration and model updates

Update Lab 05 docs: reflect actual HOG+LBP+SVM implementation

Add Writer Identification tab and presentation generator

Update documentation to include Named Entity Recognition as a new application area and revise related sections for clarity

virtual env update

Grapholab first commit