Shipping orders should generate the printable and store it somewhere

[avikalpg]

Currently, when a user orders a 3D print, we only save the details that help us regenerate the 3D model on our own and print it.
However, if the user is generating the 3D model using their own access key, we might not be able to regenerate it (for example, when they have a self-hosted GitHub).

Expected behaviour

• When the user orders a skyline, along with the order details, we should also save the 3D model (as STL) in our storage (can be Google Drive or Vercel blob).
• The link to the STL file should be stored in the spreadsheet along with the order details.
• For generating the STL, 'scale' should be set to 3 instead of the default value.