through IDynamicFileInfoProvider and etc, external component such as razor should be able to provide us dynamic file (such as generated c# content for cshtml file) on the fly and let us know update on the content.

renamed Column to Character since Column should be only used when it accounts "tab". and count "tab" as tab size rather than just 1 char.

moved FAR to work on top of new set of APIs. it should now show things on html correctly

added support for code lens. but found 1 issue. without changing VS side, I can't fix filename. and without fixing filename, navigation won't work properly