build: migrate to create-typescript-app@1

[JoshuaKGoldberg]

PR Checklist

• Addresses an existing open issue: fixes 🛠 Tooling: Unneeded releases going out #95; fixes 🛠 Tooling: Migrate to create-typescript-app@1 #270
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Looks like this also improves reported unit test coverage? Hooray!

[codecov]

Codecov Report

Merging #272 (89d3dc6) into main (ed6e6c1) will increase coverage by 26.61%.
The diff coverage is 63.29%.

❗ Current head 89d3dc6 differs from pull request most recent head 2f114f9. Consider uploading reports for the commit 2f114f9 to get more accurate results

@@             Coverage Diff             @@
##             main     #272       +/-   ##
===========================================
+ Coverage   53.60%   80.22%   +26.61%     
===========================================
  Files          28       35        +7     
  Lines         832     6406     +5574     
  Branches      276      360       +84     
===========================================
+ Hits          446     5139     +4693     
- Misses        313     1267      +954     
+ Partials       73        0       -73     

Flag	Coverage Δ
4.3.5	80.00% <63.13%> (+27.11%)	⬆️
4.6.4	80.03% <63.13%> (+27.02%)	⬆️
4.9.5	80.03% <62.80%> (+26.90%)	⬆️
latest	80.00% <62.80%> (+26.99%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
src/compilerOptions.ts	97.16% <100.00%> (+12.95%)	⬆️
src/flags.ts	100.00% <ø> (ø)
src/modifiers.ts	100.00% <100.00%> (ø)
src/nodes/typeGuards/compound.ts	94.26% <ø> (+12.44%)	⬆️
src/nodes/typeGuards/single.ts	96.61% <ø> (+23.88%)	⬆️
src/scopes.ts	69.76% <ø> (+44.76%)	⬆️
src/tokens.ts	100.00% <100.00%> (+15.38%)	⬆️
src/types/typeGuards/compound.ts	91.48% <ø> (+41.48%)	⬆️
src/types/typeGuards/intrinsic.ts	94.28% <ø> (+14.28%)	⬆️
src/types/typeGuards/literal.ts	97.95% <100.00%> (+9.07%)	⬆️
... and 16 more

... and 9 files with indirect coverage changes

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