New feature: Read the title of the issue for regex, not only the body

[Diogo Teixeira]

As an enhancement, the title should be used to check the regex of issue labeler, instead of only the body.

This could be used as a flag, for example:
ignore_issue_title=(true|false), by default=true

[Diogo Teixeira]

Hello @stephanmiehe , how are you?

Is this possible new feature on your implementation road map? :)

Thanks!