examples: add an example configuration for go source files
Tested by timeless.
Differential Revision: https://phab.mercurial-scm.org/D7683
[fix]
clang-format:command = clang-format --style file -i
clang-format:pattern = (**.c or **.cc or **.h) and not "listfile:contrib/clang-format-ignorelist"
rustfmt:command = rustfmt
rustfmt:pattern = set:**.rs
black:command = black --config=black.toml -
black:pattern = set:**.py - mercurial/thirdparty/** - "contrib/python-zstandard/**"
# Mercurial doesn't have any Go code, but if we did this is how we
# would configure `hg fix` for Go:
go:command = gofmt
go:pattern = set:**.go