Add linter rule for detecting unnecessary wildcards in network rule patterns

In network rule patterns, the wildcard is used to match any sequence of characters.
However, there are three redundant cases that should be flagged:

- Duplicated wildcards (2 or more), e.g. `foo**bar` or `foo***bar`
- Leading wildcard, e.g. `*pattern` or multiple, like `**pattern`
- Trailing wildcard, e.g. `pattern*` or multiple, like `pattern**`

Note: in some cases we should allow a trailing wildcard. For example, if the user wants to avoid `/foo/bar/` being interpreted as a regular expression, they may write `/foo/bar/*` instead. See https://github.com/AdguardTeam/AGLint/issues/264

The problem should be autofixable.

It is important that redundant wildcards do not cause any functional issues, so marking this as a warning is sufficient, and it does not need to be part of the network rule pattern validator.