add some llvm intrinsics

[edg-l]

Btw i found out about the ods, its pretty neat!

Although i haven't found these intrinsics in the ods.

[raviqqe]

Thank you for the addition of LLVM primitives!

The ODS is actually work done by @Danacus. It's still experimental but works amazingly at least for simple operations.

I'm gonna check out why their definitions are missing from TableGen files.

[Danacus]

I think I know why. We currently include LLVMOps.td (https://github.com/raviqqe/melior/blob/main/melior/src/dialect/ods.rs#L53), but intrinsics are defined in LLVMIntrinsicOps.td. We can either add an include line or make a separate call to dialect!.

[raviqqe]

@Danacus Thank you for the investigation!