[internal/scrapertest] Add sortation functions that correspond to comparison function

[djaglowski]

To handle unordered slices of resources/scopes/datapoints, we should add sortation functions to this package, which could be called before comparisons are made. The sortation likely needs to be sensitive to the same CompareOptions so that expected variables (unpredictable values, times, etc) do not influence the sort. I'll open another issue for this.

Originally posted by @djaglowski in #10828 (comment)

[Frapschen]

I would like help it :)

[djaglowski]

Thanks @Frapschen. I'll assign this to you then.

[djaglowski]

Closed by #10922