cmd/reticulum-go: use slog for logging

[holiman]

Hi,

I've recently started looking into reticulum, as find it easier to learn by experimenting in code than reading. While looking/poking at the code, I noticed that this repo uses it's own custom logging semantics.

Nowadays, the slog package is in the golang standard library, much better than the legacy log, capable of level-filtering and configuring various output-options (json/text etc). This PR switches the cmd/reticulum-go cmd to use the slog, but leaves the old logging in the libs. Which becomes a bit odd:

[user@work Reticulum-Go]$ go run ./cmd/reticulum-go/ 
2025/01/17 15:38:39 INFO Initializing Reticulum... "debug level"=-8
2025/01/17 15:38:39 INFO Configuration loaded source=/home/user/.reticulum-go/config
2025/01/17 15:38:39 INFO Directories initialized
2025/01/17 15:38:39 INFO Transport initialized
2025/01/17 15:38:39 INFO Created new identity hash=4165220ebeda2283d89c62306f687efa
2025/01/17 15:38:39 INFO Creating destination...
2025/01/17 15:38:39 [DEBUG-3] Creating new destination: app=Go Client type=0 direction=1
2025/01/17 15:38:39 [DEBUG-5] Calculating hash for destination Go Client.node

I thought I'd check if you're interested in this at all, before I do too much work. If you are, then I can continue and replace it in the remaining code too.

Cheers!

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[Sudo-Ivan]

Yep that is all good with me, thank you for the help.

[holiman]

I have't fully dropped the ball on this, I just got sidetracked by life a bit.

[holiman]

Semi-unrelated question. I'd like to set up a minimal flow, for testing and for my own understanding, of a data transfer between two endpoints. It could be over io.Pipe, or over a unix socket.

Do I need to implement a pipe interface first, or is there already some existing way to just transfer data between two endpoints without using the network stack?

[Sudo-Ivan]

I am very sorry I have been quite busy. Give me a few days to catch up on some stuff and I will let you know how you can do some testing.