feat: implement FieldElement::from<bool>()

[TomAFrench]

Related issue(s)

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Description

Summary of changes

We've got a huge number of instances of this code around multiple codebases so I think it's worth adding a quick way to create a field element to represent a boolean value.

Dependency additions / changes

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Test additions / changes

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Checklist

• I have tested the changes locally.
• I have formatted the changes with Prettier and/or cargo fmt with default settings.
• I have linked this PR to the issue(s) that it resolves.
• I have reviewed the changes on GitHub, line by line.
• I have ensured all changes are covered in the description.

Additional context

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