Print out service name instead of hash in log

[Abdillah]

Feature Proposed

Currently, when rathole encounter problematic connection with a client (or service), it prints only the hash. This makes very cumbersome to know what's wrong.

2024-08-04T03:33:44.133348Z ERROR connection{addr=19.21.31.21:43302}: rathole::server: No such a service 636396f02b6571e40d8fe91cba550515c0cdc0e7d314c210e00b02256375a796
2024-08-04T03:33:45.244408Z  INFO connection{addr=19.21.31.21:43318}: rathole::server: Try to handshake a control channel
2024-08-04T03:33:45.244613Z ERROR connection{addr=19.21.31.21:43318}: rathole::server: No such a service 636396f02b6571e40d8fe91cba550515c0cdc0e7d314c210e00b02256375a796
2024-08-04T03:33:46.133706Z  INFO connection{addr=19.21.31.21:43322}: rathole::server: Try to handshake a control channel
2024-08-04T03:33:46.133835Z ERROR connection{addr=19.21.31.21:43322}: rathole::server: No such a service 636396f02b6571e40d8fe91cba550515c0cdc0e7d314c210e00b02256375a796
2024-08-04T03:33:47.303882Z  INFO connection{addr=19.21.31.21:45388}: rathole::server: Try to handshake a control channel

Use Case

In above case, I don't know which service is wrong, so I ignore it. But, I actually has unstable connection. So, I can't do anything.