feat: include commit options for repo.Commit and repo.InitAndCommit

[ChBLA]

This is a breaking change for the git package!

This allows the consumer to provide commit options. This is useful for setting the Author or Committer manually, instead of letting go-git automatically detect it. Since go-git/go-git#110, if you do not have author set in $HOME/.gitconfig, repo.Commit fails.

[ChBLA]

If it is not desired to break the API for Commit and InitAndCommit, another function SetAuthor could be used which would save the author to the gitRepository struct.

[KimNorgaard]

If it is not desired to break the API for Commit and InitAndCommit, another function SetAuthor could be used which would save the author to the gitRepository struct.

If you want to keep it backward compatible I think we could use variadic options (or function options):

	InitAndCommit(dir string, url string, cfg *config.Config, opts ...*git.CommitOptions)

Then use opts[0] if present.

or more elaborate:

type GitOptions struct {
	CommitOptions *git.CommitOptions
}

type GitOption func(*GitOptions)

func WithCommitOptions(o *git.CommitOptions) GitOption {
	return func(go *GitOptions) {
		go.CommitOptios = o
	}
}

func InitAndCommit(dir string, url string, cfg *config.Config, opts ...GitOption) {
	gitoptions := &GitOptions{}
	for _, opt := range opts {
		opt(gitOptions)
	}
}

or something like that :)

I'm partial to the latter solution as it is more intuitive, doesn't pollute the signature, doesn't require knowing which index in the options you are looking at and is easier to extend.

[KimNorgaard]

See comment