Enable proof of work defense [2 XMR]
The proof of work DoS protection flag (`HiddenServicePoWDefensesEnabled 1`) was added in https://github.com/haveno-dex/haveno/pull/1012 by @preland.

However, the flag is not applied to the seed nodes or app directory's tor directory (i.e. xmr_mainnet/tor/torcc).

This issue requests applying the flag successfully to enable proof of work DoS protection for Tor services.