🚀 Feature: Rename "TypeParts" functions to "Constituents"?

[JoshuaKGoldberg]

Bug Report Checklist

• I have tried restarting my IDE and the issue persists.
• I have pulled the latest main branch of the repository.
• I have searched for related issues and found none that matched my issue.

Overview

There are three functions exported or proposed for ts-api-utils around returning the .types property of a type:

• intersectionTypeParts
• unionTypeParts
• feat: add typeParts function #374

The terminology we use in typescript-eslint for "type parts" is constituent (typescript-eslint/typescript-eslint#5841). My proposal is:

1. Make the same 2-3 functions available under names get(Intersection|Union)?Constituents, marking the old functions as @deprecated
2. Update them in any libraries we maintain - especially if we're forced to by eslint-plugin-deprecation
3. Remove the old names in the next major version

Additional Info

No response

[JoshuaKGoldberg]

Marking as accepting PRs. The old function names will have to remain as @deprecated aliases until the next major version.