Implement OrdWithEngines for some types

[emilyaherbert]

Description

This PR is a subset of #3744. It adds a OrdWithEngines for the types required in #3744. Note---this isn't a necessary change into master right at this current moment, just simply a way of breaking up #3744 😄

Checklist

• I have linked to any relevant issues.
• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation where relevant (API docs, the reference, and the Sway book).
• I have added tests that prove my fix is effective or that my feature works.
• I have added (or requested a maintainer to add) the necessary Breaking* or New Feature labels where relevant.
• I have done my best to ensure that my PR adheres to the Fuel Labs Code Review Standards.
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[otrho]

Do you need Ord to put stuff into BTreeMaps or something? What's the general need for ordering types?

[emilyaherbert]

Do you need Ord to put stuff into BTreeMaps or something? What's the general need for ordering types?

Yeah, that is the reason! More specifically #3744 introduces a classic constraint solver that uses types in the constraints. The BTreeMap is used to both avoid duplicate constraints and ensure that constraints are solved in the same order every time the compiler compiles the same bit of code.