arti: Write the minimal code needed to launch onion proxies.
This isn't production-quality yet (no reconfiguration support) and won't even work at all until we solve the bug in !1640 (merged) that keeps us from parsing proxy configurations.
This isn't production-quality yet (no reconfiguration support) and won't even work at all until we solve the bug in !1640 (merged) that keeps us from parsing proxy configurations.