feat: allow providing current directory in `init` command

[szymonrybczak]

Summary:

Context: https://github.com/react-native-community/cli/pull/365#issuecomment-2298684999.

Test Plan:

1. Clone the repository and do all the required steps from the Contributing guide
2. Run this command:

node /path/to/react-native-cli/packages/cli/build/bin.js init asdf --directory ./

3. Should create project in current directory, if it contains some files it should ask what to do before.

Checklist

• [x] Documentation is up to date to reflect these changes.
• [x] Follows commit message convention described in CONTRIBUTING.md