Allow to configure capture mode for highlighters

[variar]

For expressions like aaa.*(bbb|ccc) klogg assumes, that user wants to see only captured part highlighted. For regular highlighters that should be configurable and main match highlight should always highlight full match

[xaljer]

In aaa.*(bbb|ccc)|ddd, ddd is also not highlighted.

[variar]

In aaa.*(bbb|ccc)|ddd, ddd is also not highlighted.

This is expected. Only capture groups are highlighted if they are present. Here there is a capture group (bbb|ccc), and ddd is not captured