Improve search in the Filter Editor and Filtering log

#### Filter Editor and Filtering log

* add regexp support for searching (regardless of column type in the fileting log)

#### Filtering log

* describe undocumented search filters in the Filtering Log
* `url:` - filter content by a part of request address only (`Name`column)
* `site:` - filter content by a part of the source site only (`Source` column)
* `app:` - filter content by the executable name (`Process` column)
* add new search filters in the Filtering Log
* `rule:` - filter content by a part of the rule
* `filter:` - filter content by a part of the filter name
* add ability to combine search options to narrow down the search
* add regexp support for the search filters (for example: `url:/example.com|example.org|adsby/` to show only urls, which contain matched parts)
* add the ability to hide certain strings by a separate list of regular expressions, applied to the `Name` column **+ a button** for quick disable/enable this filter.
**Why is it necessary?** - Since filtering is system-wide and all applications are planned to be filtered, the filtering log will be overloaded with requests that are not of interest in solving filtering-related problems.
For a long time now, if you have a lot of tabs open with sites that are constantly loading something, it becomes difficult to view the log. The current filters in the log are not enough for convenient work.
This is aggravated by the absence of the ability to pause the filter log #1997 and the absence of a column with time #4554 (after loading, it is impossible to find the previous position in the log).
For example, in Fiddler I have more than a hundred domains in a similar list, which in my usual work filters out a significant part of queries that are not of interest.

How looks the similar thing in Fiddler