Add support for adding other filename patterns for tag highlighting.

HTML is often generated from templating engines - like JSP, ASP, ERB etc. Those files have HTML structure(with embedded code), so breeze's tag highlighting can be useful for these types of files as well. There are many templating engines out there, so instead of hard-coding all of them, I think it would be best to let the users define what types of files they want to use breeze's tag highlighting for.

With this pull request, users can use `g:breeze_highlight_filename_patterns` to set the filename patterns to highlight.