Read the EOL option from settings and pass it to the IndentProcessingWriter decorator.

[minidfx]

This PR gives the opportunity to set the EOL of the code behind generated from the feature files. This is helpful for teams working on different operation system but on the same project by settings for instance CRLF as EOL even for the Mac/Linux users.

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue).
• [x] New feature (non-breaking change which adds functionality).
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected).
• [ ] Performance improvement
• [ ] Refactoring (so no functional change)
• [ ] Other (docs, build config, etc)

Checklist:

• [x] I've added tests for my code. (most of the time mandatory)
• [x] I have added an entry to the changelog. (mandatory)
• [x] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.

[minidfx]

Question ... Do you have a specific branch If I would like to add the feature into the current release SpecFlow package (3.9.*) instead of in the master branch which is a beta?