Add support to hosts filter lists using the format 0.0.0.0 [domain] to block

[Diego-BF]

Description

When the host filter list uses the format 0.0.0.0 [blocked_domain], urls from the domains/subdomains in the list aren't blocked. Example of list that uses this format is https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts .

Steps to Reproduce

1. Add some list that uses the format 0.0.0.0 [blocked_domain];
2. Access some site that have the urls from the blocked domain/subdomain as a first or third party.

Actual result:

The url from the domain/subdomain isn't blocked by Brave, either as a first or third party.

Expected result:

The url from the domain/subdomain is blocked by Brave, either as a first or third party.

Reproduces how often:

Easily reproduced

Brave version (brave://version info)

Brave	1.31.87 Chromium: 95.0.4638.54 (Official Build) (64-bit)
Revision	d31a821ec901f68d0d34ccdbaea45b4c86ce543e-refs/branch-heads/4638@{#871}
OS	Linux

Miscellaneous Information:

The filter list https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts use this format.