r0hit0303
5547ce3413
Adds a singleton QueryFilterData class to load, and then parse the downloaded rules of [query-filter component](https://github.com/brave/brave-browser/issues/54393). The `QueryFilterData` class then store these rules in memory via a `vector` of new data structure `QueryFilterRule` which is exposed to public via the member `rules()` method. Client integration to consume the query-filter would be followed-up in the next change. This change also includes unit tests, and was also tested manually to ensure the component was downloaded from server and was parsed correctly. The change is behind the feature flag [kQueryFilterComponent](https://sourcegraph.com/r/github.com/brave/brave-core/-/blob/components/query_filter/common/features.cc?L13) which is disabled by default.