Initial Oceananigans Kernel

This requries the fix for tracing as discussed on slack with @mofeing @jumerckx and others.

But assume that is resolved, and also https://github.com/llvm/llvm-project/pull/121987 lands (cc @ftynse @ivanradanov @glwagner ) here is the IR.

[ocean.mlir.txt](https://github.com/user-attachments/files/18340744/ocean.mlir.txt)

Per other conversation @ftynse we clearly need to figure out the SROA of those constants from the ABI shim (and inlining). Then from there we can start to do @ivanradanov's polyhedral optimizations.