Would you consider adding a LICENSE file?

Hi! We depend on `CodeEditSymbols` in a small macOS app and want to ship it
with correct attribution for the packages we bundle.

This repository doesn't currently have a `LICENSE` file, and there's no license
statement in the README — so there's no explicit grant covering redistribution
of the package inside a distributed application. The sibling repos in the org
(`CodeEdit`, `CodeEditSourceEditor`) are MIT, so we suspect that's the intended
license here too and the `LICENSE` file just hasn't been added yet.

Would the team be open to adding the org's standard MIT `LICENSE`? It would let
downstream apps like ours reproduce the required attribution correctly.

We're also contributing fixes upstream — see #22 — so we're invested in the
package's health.

Thanks so much!

Revise o README atual do repositório e compare o licenciamento nos repositórios irmãos CodeEdit e CodeEditSourceEditor. Confirme que a licença MIT padrão da organização se aplica aqui e, em seguida, adicione o arquivo LICENSE e uma declaração de licença no README; o trabalho estará concluído quando os usuários downstream puderem identificar os termos de redistribuição e atribuição.

Escrita pelo modelo de indexação a partir do texto da issue.