chore: add structured package data for number/float32/base/exponent

[Lokeshranjan8]

Resolves none.

Description

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This pull request:

• Adds structured package data for number/float32/base/exponent

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This pull request has the following related issues:

• #{{TODO: add related issue number}}

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Coverage Report

Package	Statements	Branches	Functions	Lines
number/float32/base/exponent	$\color{green}202/202$ $\color{green}+100.00%$	$\color{green}5/5$ $\color{green}+100.00%$	$\color{green}2/2$ $\color{green}+100.00%$	$\color{green}202/202$ $\color{green}+100.00%$

The above coverage report was generated for the changes in this PR.

[Neerajpathak07]

Why does exponent require scaffolding? Ideally, for binary (2-arg) scalar kernel math APIs, we need to add structured package data.
Exponent in operates on unary argument.

[Lokeshranjan8]

@Neerajpathak07 Got it, thanks for clarifying.

[kgryte]

@Neerajpathak07 Adding structured package data for unary packages is fine. The question to ask when determining whether to add such metadata is whether we want a ufunc which wraps a respective scalar kernel. If the answer is yes, we want structured data.

In this case, yes, we can add structured data, but the changes in this PR were not correct, as data was written as if for a binary API, not a unary API.