Create EndOfLine option

[virzak]

trafficstars

Description:

Add styler option end-of-line ( lf | crlf ) to force specific line endings

xstyler -p -r -d WPF -l Minimal --end-of-line lf

Partially fixes #285

Checklist:

• [X] I have commented my code, particularly in hard-to-understand areas
• [X] My changes generate no new warnings
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally with my changes
• [ ] I have tested my changes by running the extension in VS2017
• [ ] I have tested my changes by running the extension in VS2019
• [ ] If changes to the documentation are needed, I have noted this in the description above

[Jay-o-Way]

What's keeping this?

[virzak]

@grochocki, all issues are resolved apart from end-of-line vs line-ending. I'm cool with whatever you decide. Do you have a suggestion on automated testing for this PR?

[virzak]

@grochocki would it be possible to merge this soon?