If you want to use simba-starter directly in your application, this is possible, as simba-starter is published to NPM.
npm i @divriots/simba --save
Using a component directly in your application
<head>
<script type="module" src="@divriots/simba/button/define"></script>
</head>
<body>
<simba-button>Submit</simba-button>
</body>