change hub file structure

internal/entities/email/email.go

@@ -0,0 +1,27 @@
+package email
+
+type EmailData struct {
+	to   string
+	subj string
+	body string
+}
+
+func NewEmailData(to, subj, body string) *EmailData {
+	return &EmailData{
+		to:   to,
+		subj: subj,
+		body: body,
+	}
+}
+
+func (e *EmailData) To() string {
+	return e.to
+}
+
+func (e *EmailData) Subject() string {
+	return e.subj
+}
+
+func (e *EmailData) Body() string {
+	return e.body
+}