Smart Tab Re(gex)namer per k1nz

This is a smart tab renamer. You can use regex matching on title for specific URLs to rename tab titles at will.

For each rule, you have 3 fields to fill:
- target URL pattern: the URLs this rule will apply on
- title regex (with groups): the regex that will match the tab title. You can use capture groups and use those in the rename pattern.
- rename pattern: the new name for the tab, can use the captured groups from above.

For example, to rename all tabs on github.com starting with "GitHub -" to the rest of the title:
- target URL: "*github*"
- title regex: "^GitHub - (?<title>.*)$"
- rename pattern: "<title>".