Use float library comparison function instead of wrapper

[findolor]

Summary

Replace the existing float comparison wrapper in the Take Orders SDK with a direct comparison function from the float library.

Context

The Take Orders SDK currently uses a custom wrapper that composes the float type's less_than and greater_than functions to perform comparisons. A comparison function that returns Rust's Ordering type (Greater, Less, Equal) should be implemented directly in the float library, as this logic belongs with the float type itself.

Steps

1. Implement a comparison function in the float library that returns Ordering
2. Update the Take Orders SDK in this repo to use the new library function
3. Remove the existing comparison wrapper