Replace IZosFilesResponse with IZosFilesTypedResponse where applicable

[traeok]

Is your feature or enhancement request related to a problem or limitation? Please describe

I am a developer that wants type inference on the responses received from the z/OS Files SDK functions (such as List.dataSet). Without inference, I have to reference pre-existing logic in Zowe Clients or reference z/OSMF API documentation to ensure that I am accessing valid item properties.

Describe your enhancement idea

Replace usage of IZosFilesResponse with IZosFilesTypedResponse where applicable.

Blocked until #2421 is implemented

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