Add case-sensitive option to searching for a string in data sets

[adam-wolfe]

Is your feature request related to a problem? Please describe.

Currently, searching is case-insensitive. In some cases, it would be useful to perform case-sensitive searching to limit the number of results returned to only those results that match the case of the specified query.

Describe the solution you'd like

Let users specify whether the search should be case-sensitive.

Describe alternatives you've considered

Additional context

In Zowe CLI there is a --case-sensitive option for the zowe files search ds command.

[github-actions]

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