Apply wrap-and-sort -at by default

[n-peugnet]

The Go team currently recommends the flags --wrap-always --trailing-comma [1] which translates to -at, so dh-make-golang should use this flag combination by default.

[1] https://go-team.pages.debian.net/workflow-changes.html#wf-2017-11-debian-control

[ottok]

This https://go-team.pages.debian.net/workflow-changes.html#wf-2017-11-debian-control is very old. I think most people nowadays would recommend -ast, which is also what upstream wrap-and-sort maintainers seem to plan to make the future default for the whole tool, and what debputy reformat already uses.

So I am in favor of merging this but with -ast as the default.

[ottok]

Based on recent discussions on mailing list and dh-make-golang and pkg-go-tools about workflows and defaults, and now also in https://go-team.pages.debian.net/workflow-changes.html#wf-2025-01-wrap-and-sort-ast, I think you should update this to default to -ast.