Scaffold out stack size analysis

[mullr]

If you have a keep-stack-sizes.x with:

SECTIONS
{
  .stack_sizes (INFO) :
  {
    KEEP(*(.stack_sizes));
  }
}

Then you can:

cargo install stack-sizes

RUSTFLAGS="-Z emit-stack-sizes -C link-arg=-Wl,-Tkeep-stack-sizes.x -C link-arg=-N -C link-arg=-nostartfiles" \
  selfe build --platform virt --sel4_arch aarch64

stack-sizes target/aarch64-unknown-linux-gnu/debug/my-project  | sort -g -k 2 | less

It may be appropriate for the selfe command to help with some of this.