🛠 Tooling: Use the create engine for updates

[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

Splitting out of #1181: I'm onboarding this project to the new "create" engine in https://github.com/JoshuaKGoldberg/create. #1670 added usage of file creations. Another step will be having this repo's updates of older/equivalent tools to the new forms. For example, the deletion of old configs:

create-typescript-app/src/steps/clearUnnecessaryFiles.ts

Lines 3 to 4 in 8bcd8f6

	const globPaths = [
	...extensions(".babelrc", "cjs", "cts", "js", "json", "mjs"),

create-typescript-app/src/steps/clearUnnecessaryFiles.ts

Lines 29 to 33 in 8bcd8f6

	export async function clearUnnecessaryFiles() {
	for (const globPath of globPaths) {
	await fs.rm(globPath, { force: true, recursive: true });
	}
	}

Each block will want to manage its updates. For example, blockTsup -which manages builds- will want to delete old Babel config files.

Additional Info

I'd previously referred to this as migrations. But that's confusing overlap with the migration mode.

💖