Split string - avoid allocation of object array. Added StringHelpers.SplitAndTrimTokens

[snakefoot]

Triggered by #3308 to avoid params-object-array unless needed. But also to encapsulate:

stringValue.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries);

In a simpler method:

stringValue.SplitAndTrimTokens(';');

That also trims the tokens, and removes empty tokens.

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This change is 

[304NotModified]

👍 c# ext :)

Could you please add some test cases for SplitAndTrimTokens? If that one has a bug, that could have some serious consequences.

[snakefoot]

@304NotModified Could you please add some test cases for SplitAndTrimTokens?

Added some unit-tests

[304NotModified]

Thanks!

[codecov-io]

Codecov Report

Merging #3311 into dev will decrease coverage by <1%.
The diff coverage is 100%.

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##             dev   #3311    +/-   ##
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- Coverage     80%     80%   -<1%     
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  Files        356     356            
  Lines      28077   28085     +8     
  Branches    3739    3742     +3     
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- Hits       22495   22489     -6     
- Misses      4503    4517    +14     
  Partials    1079    1079