CHANGE: added Frontend + auth

Backend/templates/user.templ

@@ -0,0 +1,10 @@
+package templates
+
+templ LoginForm(){
+	@Style()
+	<form method="POST">
+		<input name="card_uid" type="text" placeholder="card_uid"/>
+		<input name="password" type="passwort" placeholder="password"/>
+		<button type="submit">Send</button>
+	</form>
+}