Documentation for `config.commitizen` settings and custom configuration file support

Hi,

I am having difficulty finding documentation for the settings available under `config.commitizen` for `cz-conventional-changelog`.

The official documentation states:

> "Like Commitizen, you specify the configuration of `cz-conventional-changelog` through the package.json's `config.commitizen` key."

However, I have not been able to find comprehensive documentation for the available settings.

Additionally, I attempted to use a custom configuration file by setting up the following in my `package.json`:

```json
"config": {
"commitizen": {
"path": "./node_modules/cz-conventional-changelog",
"config": "./.cz-config.mjs"
}
}
```

In `.cz-config.mjs`, I have custom settings, but it does not seem to work as expected. Here is a sample of my `.cz-config.mjs`:

```javascript
export default {
types: [
{ value: 'feat', name: 'feat: A new feature' },
{ value: 'fix', name: 'fix: A bug fix' },
{ value: 'docs', name: 'docs: Documentation only changes' },
// other types
],
scopes: [
{ name: 'module1' },
{ name: 'module2' },
{ name: 'module3' }
],
// other settings
};
```

Can you please provide detailed documentation for the available settings under `config.commitizen` and clarify if custom configuration files like `.cz-config.mjs` are supported?

Thank you!

Review the official documentation and the package.json configuration shown in the issue, then inspect how the adapter handles the config.commitizen and .cz-config.mjs settings. Document the available settings and clearly state whether custom configuration files are supported, including the expected configuration format.

Written by the indexing model from the issue text.