feat: Documentation and API reference (#348)

Co-authored-by: Vadim Smirnov <smirnou.vadzim@gmail.com>
Co-authored-by: zakariasaad <zakaria.elas@gmail.com>
Co-authored-by: Vilfred Sikker <vilfredsikker@gmail.com>
Co-authored-by: Kasper <kasper@medusa-commerce.com>
Co-authored-by: Sebastian Rindom <skrindom@gmail.com>
Co-authored-by: Kasper Fabricius Kristensen <45367945+kasperkristensen@users.noreply.github.com>

www/docs/src/components/close-icon.js

@@ -0,0 +1,18 @@
+import React from "react"
+
+const CloseIcon = ({ fill = "black" }) => (
+  <svg
+    width="15"
+    height="15"
+    viewBox="0 0 9 8"
+    fill="none"
+    xmlns="http://www.w3.org/2000/svg"
+  >
+    <path
+      d="M1.05 7.76L0.51 7.22L3.79 3.92L0.51 0.62L1.05 0.0799997L4.33 3.38L7.59 0.0799997L8.13 0.62L4.85 3.92L8.13 7.22L7.59 7.76L4.33 4.48L1.05 7.76Z"
+      fill={fill}
+    />
+  </svg>
+)
+
+export default CloseIcon