Restyle aai init starter templates with the AssemblyAI brand system #234

Job	Run time
lint + typecheck + tests (py3.13)	2m 59s
brew install (real, macOS)	5m 47s
build + twine check	14s
pre-commit	1m 59s
package install — real (ubuntu-latest)	1m 9s
brew style (Homebrew formula)	53s
package install — real (macos-latest)	50s
lint + typecheck + tests (py3.12)	3m 34s
pip-audit (dependency CVEs)	26s
lint + typecheck + tests	5s
	17m 56s

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