Investigate intel C compiler

[jatkinson1000]

There are some suggestions that libtorch doesn't work with intel C compilers.
I thought we'd tested this, but perhaps we need to review and remove as an option from the README if it doesn't work!

[jatkinson1000]

Building this on Wilkes3 @ElliottKasoar and I ran into errors with building the library using an entire intel suite.

We resorted to using ifort to match the build of MiMA, but gcc for C and C++ code.
We should clarify this asap and remove instrictions for icc and icpc from the README if it is the case that intel compilers do not work.

[ElliottKasoar]

I've definitely had various issues, both locally and on CSD3, but seem to have at least one example of it now working via the default CSD3 icelake Intel compilers (icc and icpc (ICC) 20.2.6.20220226, via the intel-oneapi-compilers/2022.1.0/gcc/b6zld2mz module).

[jatkinson1000]

I have just build and run with intel compilers on Wilkes3 and the examples ran fine.
I am happy to close this as intel compilers seem to work.
Will do so later unless anyone objects?

Side note - we might want to try icx and ifx at some point.

[TomMelt]

Looks like it works on our side. Happy to re-open if anyone can create a reproducible example where it fails.