Implement server (#3)

Use Actix as HTTP service

Reviewed-on: #3

templates/home.html

@@ -0,0 +1,11 @@
+{% extends "base_page.html" %}
+{% block content %}
+
+<h1>Test OIDC Authentication flow.</h1>
+<p class="lead">Get started testing OIDC authentication flow</p>
+<p>Redirect URI: {{ redirect_url }}</p>
+<p class="lead">
+    <a href="/start" class="btn btn-lg btn-light fw-bold border-white bg-white">Start</a>
+</p>
+
+{% endblock content %}