Provide a correctly configured logger in Langoustine app

[keynmol]

Two things we want from a correctly configured Scribe logger:

1. It only writes to stderr (on all platforms), because otherwise it screws up the jsonrpc protocol
   • See https://github.com/neandertech/langoustine/blob/main/modules/tracer/backend/src/main/scala/logging.scala#L4-L8 on how it's done
2. On Node.js, it uses ANSI colours where appropriate
   • See keynmol/tree-sitter-grammar-lsp@a5b1179 on how it's done

Ideally we want to provide a def logger in LangoustineApp and all of its variants (so IO-based in LangoustineApp, unsafe in LangoustineApp.FromFuture) which is already pre-configured for the platform