Can I use command without verb when verbs are declared?

Is it possible to use verbs with options like this:
`app.exe install --name someName --version 1.0.0`
and have command which doesn't use verb and use only value attribute such as:
`app.exe someName stream`
I need to do this for backwards compatibility of my application.

檢查宣告的動詞、選項和值屬性是如何被解析的，然後比較要求的基於動詞的呼叫與向後相容的呼叫。判斷是否能在沒有歧義的情況下支援這兩種形式，並在找出相關的 parser 測試之前定義預期行為。

由索引模型根據 Issue 內容生成。