feat: add front page (resolve #34)

models/view/login.go

@@ -0,0 +1,16 @@
+package view
+
+type LoginViewModel struct {
+	Success string
+	Error   string
+}
+
+func (s *LoginViewModel) WithSuccess(m string) *LoginViewModel {
+	s.Success = m
+	return s
+}
+
+func (s *LoginViewModel) WithError(m string) *LoginViewModel {
+	s.Error = m
+	return s
+}