Allow simult. use of partic incl and excl flags

[pvandyken]

The previous restriction was arbitrary. The use of both works according to the set operation:

POPULATION ∩ INCLUDE - EXCLUDE

This will allow better CLI composability.

The tests for include and exclude-participant-label have been rolled into one test.

Resolves #343

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 92.08%. Comparing base (36c3ee6) to head (0b558e4). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #404 +/- ## ========================================== - Coverage 92.10% 92.08% -0.02% ========================================== Files 41 41 Lines 1785 1782 -3 ========================================== - Hits 1644 1641 -3 Misses 141 141 ```

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