Warn users about newer/more standard alternatives to commands being run

[oNaiPs]

Suggested in https://forum.golangbridge.org/t/introducing-go-generate-fast/33238

Would be nice to have a (toggleable) warning to the user stating there is a newer alternative to the command being run.
We could start by warning about tools that are in the language already (e.g. esc/bin-data -> go:embed)