simple flask media hosting and unity web image retrieval example for GCT700('21 Fall)

1. make "flask-server/artworks_db.csv" with the image path
2. run python code "flask-server/main.py" first, it will serve the image
3. run unity app: example code show different image from numeric keys above the alphabet keys

(python part requires Flask for hosting and pandas for data handling)

• serve other info at the same time(title,artist, etc..)
• add searching features for the db
• add filtering features