Build/extend build torch 2.8 2.9 cuda 12.8

[gsprochette]

This PR updates the build:

• build on torch [2.7, 2.8, 2.9]
• build on cuda [12.6, 12.8]
• correct name of wheels for pip
• add torch dependency constraint for each wheel (e.g. the one built on torch 2.7.0 is marked dependent on torch>=2.7,<2.8)

Tests passed on

• python 3.9 cuda 12.6 torch 2.7
• python 3.9 cuda 12.6 torch 2.8
• python 3.10 cuda 12.6 torch 2.9
  I had to do some manual changes on the wheel along the way so I'll rebuild from scratch after merge and test them all.

[gsprochette]

update: pytest passes on every cuda 12.6 wheels