BUG: logone improvements / nix improvements on `internal-json`

[qknight]

Problem

https://github.com/nixcloud/logone currently has a few problems:

if you compile 20 .drvs, then nix can't tell you the error message for each. you can only correlate it and logone is not very good at that at this time.

In order to make logone work as a general standalone logger for nix (like nom) these things would have to be fixed:

• internal-json logger improvements: "action":"stop" id handling NixOS/nix#13909
• internal-json logger improvements: dedicated error types for failed drv builds vs. nix evaluation error NixOS/nix#13910
• internal-json logger improvements: build stats changes NixOS/nix#13935
• internal-json logger improvements: inject custom messages with new type NixOS/nix#13958

I've added a small test-case into logone for development:

https://github.com/nixcloud/logone/tree/main/passthru-test