Adds into_pyarray to faer Mat

[wgurecky]

Interoperability with faer (https://github.com/sarah-quinones/faer-rs) Mats.

Related faer-ext PR for numpy-to-faer direction: sarah-quinones/faer-ext#6 . For bi-directional interoperability of faer with python/numpy. @sarah-quinones

[davidhewitt]

Needs CI fixing please

[davidhewitt]

Looks like this has hit a build issue with faer.

[wgurecky]

Looks like this has hit a build issue with faer.

yes, on windows x86 :/ . I don't have a good way to test on windows locally. Looks like a small change is needed in the faer-traits crate.

[wgurecky]

Looks like this has hit a build issue with faer.

Updated to the latest faer version which contains a fix for this build issue.

There is a second issue, however. faer requires msrv of 1.84.0. If this is an issue, might have to either conditionally allow this optional faer feature, or, consider implementing IntoPyArray for faer Mats in faer itself

[davidhewitt]

There still seem to be issues with Windows here.

If this is an issue, might have to either conditionally allow this optional faer feature, or, consider implementing IntoPyArray for faer Mats in faer itself

Given the seeming complexity with the CI on this end, this may be simpler (esp if faer has already implemented the reverse conversion over there).