feat: default owner and repository to Git origin (#341)

## PR Checklist

- [x] Addresses an existing open issue: fixes #196
- [x] That issue was marked as [`status: accepting
prs`](https://github.com/JoshuaKGoldberg/template-typescript-node-package/issues?q=is%3Aopen+is%3Aissue+label%3A%22status%3A+accepting+prs%22)
- [x] Steps in
[CONTRIBUTING.md](https://github.com/JoshuaKGoldberg/template-typescript-node-package/blob/main/.github/CONTRIBUTING.md)
were taken

## Overview

Calls to `git remote -v` to get the repo URL, and parses that as
`--owner` and `--repository` field defaults.

Note that this doesn't add `--description` as a default because I don't
want to mess with calling to the GitHub API & potentially needing to
authenticate. If someone really wants to add that in I'd encourage them
to file a separate feature request issue. 🙂

Author: JoshuaKGoldberg

package.json

@@ -73,6 +73,7 @@
 		"replace-in-file": "^6.3.5",
 		"sentences-per-line": "^0.2.1",
 		"should-semantic-release": "^0.0.4",
+		"title-case": "^3.0.3",
 		"typescript": "^5.0.0",
 		"vitest": "^0.29.0",
 		"yaml-eslint-parser": "^1.2.0"

pnpm-lock.yaml

@@ -8,6 +8,7 @@ import { promises as fs } from "fs";
 import { Octokit } from "octokit";
 import prettier from "prettier";
 import replace from "replace-in-file";
+import { titleCase } from "title-case";
 
 let caughtError;
 
@@ -36,6 +37,31 @@ try {
 		strict: false,
 	});
 
+	async function getDefaultSettings() {
+		let gitRemoteFetch;
+		try {
+			gitRemoteFetch = await $`git remote -v | grep fetch`;
+		} catch {
+			console.log(
+				chalk.gray(
+					"Could not populate default owner and repository. Did not detect a Git repository with an origin. "
+				)
+			);
+			return {
+				defaultOwner: "UserName",
+				defaultRepository: "my-lovely-repository",
+			};
+		}
+
+		const [, defaultOwner, defaultRepository] = gitRemoteFetch.stdout.match(
+			/\s.+\/([^/]+)\/([^/]+) \(fetch\)/
+		);
+
+		return { defaultOwner, defaultRepository };
+	}
+
+	const { defaultOwner, defaultRepository } = await getDefaultSettings();
+
 	async function getPrefillOrPromptedValue(key, message, placeholder) {
 		if (values[key]) {
 			console.log(chalk.grey(`Pre-filling ${key} to ${values[key]}.`));
@@ -63,19 +89,19 @@ try {
 	const repository = await getPrefillOrPromptedValue(
 		"repository",
 		"What will the kebab-case name of the repository be?",
-		"my-lovely-repository"
+		defaultRepository
 	);
 
 	const title = await getPrefillOrPromptedValue(
 		"title",
 		"What will the Title Case title of the repository be?",
-		"My Lovely Repository"
+		titleCase(repository).replaceAll("-", " ")
 	);
 
 	const owner = await getPrefillOrPromptedValue(
 		"owner",
 		"What owner or user will the repository be under?",
-		"UserName"
+		defaultOwner
 	);
 
 	const description = await getPrefillOrPromptedValue(