Implemented override for Cuda device instruction set.

[MoFtZ]

This PR attempts to deal with the issue of newly introduced Cuda Instruction Sets that are unknown at the time ILGPU was compiled and published to Nuget (see #880).

Using the RTX 4090 as an example, Nvidia introduced SM 9.0 and ISA 7.8. The architecture SM 9.0 can be determined by querying the device at runtime, so that's fine. However, the instruction set ISA 7.8 is unknown to ILGPU, and cannot be determined at runtime.

This PR introduces a new overload to the Cuda() method when configuring a Context that allows the caller to force the device to use a specific instruction set. This should hopefully make ILGPU versions usable as new Cuda devices are released, without forcing developers to update to the latest version of ILGPU.

// Force all Cuda devices to use ISA 7.8
using var context = Context.Create(builder => builder.Cuda(overridableDevice => overridableDevice.InstructionSet = new CudaInstructionSet(7, 8)));