chore: fix go module v2

[remyleone]

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Relates OR Closes #0000

Release note for CHANGELOG:

[jerome-quere]

IIRC This is not compliant with go module versioning, You should move everything in a v2 folder.

Also this should not be usable as a go module we should not encourage usage of this repo as a library package

[remyleone]

https://blog.golang.org/v2-go-modules

I mostly did it to enable to have the right answers for
go list -m -versions github.com/scaleway/scaleway-cli

It would also enable go install github.com/scaleway/scaleway-cli/cmd/scw@latest to work natively

[remyleone]

Fixed by #2347