fgm/go_tooling: Misc Go tools @ d646fcbf33c562094e3c5c70f618741e16ece0c7

Frederic G. MARAND 18c9b86ecb Modules tests.		%!s(int64=5) %!d(string=hai) anos
..
.gitignore	18c9b86ecb Modules tests.	%!s(int64=5) %!d(string=hai) anos
go.mod	18c9b86ecb Modules tests.	%!s(int64=5) %!d(string=hai) anos
go.sum	18c9b86ecb Modules tests.	%!s(int64=5) %!d(string=hai) anos
main.go	18c9b86ecb Modules tests.	%!s(int64=5) %!d(string=hai) anos