Nutshell cleanup wishlist #72

Job	Run time
checks / formatting	25s
checks / mypy	41s
checks / ruff	11s
regtest (3.10, 1.7.1, CoreLightningRestWallet) / regtest	3m 14s
regtest (3.10, 1.7.1, LNbitsWallet) / regtest	3m 0s
regtest (3.10, 1.7.1, LndRestWallet) / regtest	3m 0s
tests (ubuntu-latest, 3.10, 1.7.1, FakeWallet) / poetry	1m 39s
tests (ubuntu-latest, 3.9, 1.7.1, FakeWallet) / poetry	1m 45s
	13m 55s

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