chore: add `typer` ref in readme #6

Job	Run time
test / Build and inspect the package	38s
test / Python 3.10	24s
test / Install [dev] on ubuntu-latest	23s
docs / docs	37s
test / Python 3.11	25s
test / Install [dev] on windows-latest	41s
test / Python 3.12	27s
test / Install [dev] on macos-latest	11s
required-checks-pass	2s
	3m 48s

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