refactor(*): clean up code

internal/shared/shared.go

@@ -0,0 +1,32 @@
+package shared
+
+import (
+	"github.com/Masterminds/semver"
+)
+
+//ReleaseVersion struct
+type ReleaseVersion struct {
+	Last   ReleaseVersionEntry
+	Next   ReleaseVersionEntry
+	Branch string
+}
+
+//ReleaseVersionEntry struct
+type ReleaseVersionEntry struct {
+	Commit  string
+	Version *semver.Version
+}
+
+//GeneratedChangelog struct
+type GeneratedChangelog struct {
+	Title   string
+	Content string
+}
+
+//GenerateChangelogConfig struct
+type ChangelogTemplateConfig struct {
+	CommitURL  string
+	CompareURL string
+	Hash       string
+	Version    string
+}