fix: bump to create-typescript-app@2 with transitions action

[JoshuaKGoldberg]

PR Checklist

• Addresses an existing open issue: fixes 🛠 Tooling: Bump to create-typescript-app@2 #12
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Runs npx create-typescript-app --add-cta-transitions and adds a create-typescript-app.config.js to keep template customizations through automated transitions over time.

Marking as a fix: because this template update removes sourcemaps from built packages.

🫥

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (f001c11) to head (5a39e4d).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #13   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            4         2    -2     
  Lines           86        24   -62     
  Branches         9         5    -4     
=========================================
- Hits            86        24   -62     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[github-actions]

🎉 This is included in version v0.1.2 🎉

The release is available on:

• GitHub releases
• npm package (@latest dist-tag)

Cheers! 📦🚀