Please support more depth settings (not just infinite and 1)

[lithdoo]

I found that the deep option for getDirectoryContents can only control setting Depth 1 or infinite .

May I ask why can't configure a other level depth.

[perry-mitchell]

There's no hard reason here. I'd accept a PR to make it possible to specify, but it should:

• Take priority over the deep option
• Deprecate the deep option
• Default to 1
• Be typed correctly to be any number or infinity

[susnux]

The RFC only defines 0, 1 and infinity: https://datatracker.ietf.org/doc/html/rfc4918#section-9.1