Support control characters and/or regex in logs section

Hello,

I propose to add support control characters and/or regex in logs section of frontend. For example:
- search for all domains beginning with **_blog._**:
`^blog.` or `^blog\.`
- search for all domains ending in **_.org.zm_**:
`.org.zm$` or `\.org\.zm$`
- search for custom domains without extension (**_localhost_**, **_local_** etc.).:
`^[^.]+$`
- search for only IDN domains:
`[^\x00-\x7F]`
- search for domains beginning with **_adtrack._**, **_adtracking._** and **_adtracker._** - more that one subdomain in one query:
`^adtrack(er|ing)?[0-9]*[_.-]`
etc.

I know that we have one general ticket for logs improvements and we can merge it. But please think about this function before as separate feature request😂

Thank you😙
Best regards.