build wheels without build isolation, print sccache stats in builds

[jameslamb]

Description

Contributes to rapidsai/build-planning#108
Contributes to rapidsai/build-planning#111

Proposes some small packaging/CI changes, matching similar changes being made across RAPIDS.

• removes the use of build isolation in wheel builds
• printing sccache stats to CI logs
• reducing pip's verbosity in wheel building scripts
• using the RAPIDS conventions py_build_{project} and py_rapids_build_{project} in dependencies.yaml
• updating to the latest rapids-dependency-file-generator (v1.16.0)

[jakirkham]

One thing we would like to do is move to scikit-build-core: #645

Though that hasn't happened yet

We discussed some package restructuring ( #763 ), which would unblock scikit-build-core

Imagine things get a lot simpler to manage here if we are able to make those changes

[jameslamb]

Imagine things get a lot simpler to manage here if we are able to make those changes

"things" in general, definitely. Those look like good changes that should be made in this project.

But to be clear... the work described in those issues you linked wouldn't materially change the way this PR looks. For example, cuspatial projects already use scikit-build-core and have the wheels split into C++ vs. Python, and the changeset in that repo for this effort was pretty similar: rapidsai/cuspatial#1473

[jameslamb]

/merge