Function parseServiceVariablePath

parseServiceVariablePath(variablePath): {
    moduleName: undefined;
    name: undefined;
} | {
    moduleName: string;
    name: string;
}
解析服务变量的 path
Parameters
- variablePath: string
Returns {
    moduleName: undefined;
    name: undefined;
} | {
    moduleName: string;
    name: string;
}
Example
```
services.list => { moduleName: 'index', name: 'list' }
```
Example
```
services.sub.list => { moduleName: 'sub', name: 'list' }
```
Example
```
foo => undefined
```
- Defined in packages/helpers/src/helpers/code-helper.ts:172