Docs rework (#21)

* wip

* docs reworked

* reworked docs

* updated docs and pipeline

---------

Co-authored-by: ex61wi <tim.rorije@ing.com>
Co-authored-by: dutchie032 <dutchie032>

_docs/js/site.js

@@ -0,0 +1,22 @@
+document.addEventListener('DOMContentLoaded', function() {
+    const themeToggle = document.getElementById('theme-toggle');
+    const sunIcon = document.getElementById('sun-icon');
+    const moonIcon = document.getElementById('moon-icon');
+    if (!themeToggle || !sunIcon || !moonIcon) return;
+
+    function setTheme(theme) {
+        document.documentElement.setAttribute('data-theme', theme);
+        localStorage.setItem('theme', theme);
+        sunIcon.style.display = theme === 'light' ? 'block' : 'none';
+        moonIcon.style.display = theme === 'light' ? 'none' : 'block';
+    }
+
+    themeToggle.addEventListener('click', function() {
+        const current = document.documentElement.getAttribute('data-theme') || 'dark';
+        setTheme(current === 'dark' ? 'light' : 'dark');
+    });
+
+    // Initialize
+    const saved = localStorage.getItem('theme') || 'dark';
+    setTheme(saved);
+});