Image and ImageView classes

[horizon-blue]

Closes MET-31.

Summary of Changes

This PR adds Image and ImageView classes:

• Image is a host-side-only object that allocate & deallocate the memory buffers in device/host automatically via RAII.
• ImageView is a non-owning view of Image which can be copy & pass around on either device or host (or between them).

I've added the basic Python bindings for both classes on both device types as well.

Test Plan

The cpp test (test_image.cu) illustrates how the two classes are expected to be used, checks that we can modify the underlying image buffer through ImageView, and shows that we can copy Image from device to host.

The python test (test_image.py) is pretty minimal at this point. It only checks that the bindings are created successfully, and that we can get the confidence and depth fields as 2D JAX arrays. This interface can be used to plot & visualize the image data as we start putting things together.

As always, you can run the included tests with

pixi run test

[linear]

MET-31 Implement `Image`

Definition of done:

• The Array2D fields of Image should bind to numpy JAX arrays.

[arijit-dasgupta]

LGTM! I did not do too much of a deep dive, want to let you merge this asap. The tests look good and make sense.