az devops service-endpoint list/show should also display the "Grant access permissions to all pipelines" checkbox as a boolean flag

**Related command**
az devops service-endpoint list/show

**Is your feature request related to a problem? Please describe.**
It's possible to update the flag with az devops service-endpoint update --enable-for-all. But I don't see how I can see whether it's set or not. In fact I want to list all service-endpoints with this flag set as I see this as a potential security issue.

**Describe the solution you'd like**
I just want the flag as an extra attribute in the returned result.

**Describe alternatives you've considered**
Don't see what the alternative is.

**Additional context**
N/A