--help missing

I am expecting the output of `--help` to list the commands like `compare` as shown in:
https://www.npmjs.com/package/@azure/oad/v/0.10.4

Here is what I get with the stable version of Node.

```
PS C:\Users\cataggar\ms\azure-rest-api-specs-pr> oad --version
0.10.4
PS C:\Users\cataggar\ms\azure-rest-api-specs-pr> oad --help
Options:
--help Show help [boolean]
--version Show version number [boolean]
PS C:\Users\cataggar\ms\azure-rest-api-specs-pr> node --version
v20.5.1
```

Start by reproducing the issue with `oad --help` on Node v20.5.1 and compare the output with the @azure/oad 0.10.4 package documentation. Done means the help output lists commands such as `compare` alongside the existing options.

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