🚀 Feature: Add VsCode config git.branchProtection

### Feature Request Checklist

- [x] I have looked at the latest version of the project.
- [x] I have [searched for related issues](https://github.com/JoshuaKGoldberg/create-typescript-app/issues?q=is%3Aissue) and found none that matched my issue.

### Overview

Adding a git.branchProtection to the settings.json config for vscode gives a visual indicator(🔒) in VsCode that a branch is protected.
```jsonc
// settings.json
"git.branchProtection": [
"main"
]
```

### Additional Info

This doesn't replace the need to add branch protections in github. It only provides a nice visual indication.