I've read about the Yoroi dapp connector, but is there a way to connect a wallet which was created with cardano-cli to some dapp?
cardano-cli uses a different way to generate from th other wallets Daedalus or Yoroi.
The creation of the keys via
cardano-cli does not include the step of derivation from bip39 mnemonics entropy - which is a prerequisite for using it in other wallets.
Although all the keys conform with the same
cardano-cli do not allow to be recovered via the seed phrase.
It is possible to convert the keys in other direction:
mnemonic-bip39 keys -> cardano-cli vkey/skey format