Split CheckPipe feature of trimming redundant whitespace out into option CheckPipeForRedundantWhitespace

[bergmeister]

PR Summary

This is because some people align their pipes (e.g. in Pester tests) and don't want redundant white-space to be trimmed.
Therefore the concern of the rule options is split into 2 areas:

• Checkpipe still corrects when there is no whitespace around the pipe operator
• The new CheckPipeForRedundantWhiteSpace option is for cases where redundant whitespace needs to be trimmed. Disabled by default.

PR Checklist

• PR has a meaningful title
  • Use the present tense and imperative mood when describing your changes
• Summarized changes
• Change is not breaking
• Make sure all .cs, .ps1 and .psm1 files have the correct copyright header
• Make sure you've added a new test if existing tests do not effectively test the code changed and/or updated documentation
• This PR is ready to merge and is not Work in Progress.
  • If the PR is work in progress, please add the prefix WIP: to the beginning of the title and remove the prefix when the PR is ready.

[rjmholt]

Is the example here accurate? Or is it something like:

foo    | bar

vs

foo | bar

(GitHub seems to normalise spaces in inline code...)

[bergmeister]

Yes, you're right, I forgot to update the example as well.