generate

type Params struct {
	CommitSha         string
	RepoDir           string
	Bump              string
	BaseVersion       *semver.Version
	Prefix            string
	PrereleaseID      string
	MainBranchName    string
	DevelopBranchName string
	Debug             bool
}

type Result struct {
	PreviousTag  string
	AncestorTag  string
	SemverTag    string
	IsPrerelease bool
}