Compress basic rules

[ameshkov]

We should try compressing simple basic rules.

Here's the algorithm.

Take simple third-party blocking rules (e.g. matching this regex: ^\|\|[a-z0-9_.-]+\^\$third-party$):

||example.org^$third-party
||example.com^$third-party

Compress them into a single rule:

^[htpsw]+:\/\/(example.org|example.com)[/:&?]?

The main question here is the impact on the content blocker performance.

[ameshkov]

Ah, Safari does not support | :(