Docs site poc (#346)

add docusaurus based docs site under /docs

docs/src/components/HomepageFeatures/index.tsx

@@ -0,0 +1,61 @@
+import React from "react";
+import clsx from "clsx";
+import styles from "./styles.module.css";
+
+type FeatureItem = {
+  title: string;
+  Svg: React.ComponentType<React.ComponentProps<"svg">>;
+  description: JSX.Element;
+};
+
+const FeatureList: FeatureItem[] = [
+  {
+    title: "Your conversational assistant",
+    Svg: require("@site/static/img/logo.svg").default,
+    description: (
+      <>
+        State-of-the-Art chat assistant that can be personalized to your needs.
+      </>
+    ),
+  },
+  {
+    title: "Retrieval via Search Engines",
+    Svg: require("@site/static/img/logo.svg").default,
+    description: (
+      <>External, upgradeable knowledge: No need for billions of parameters.</>
+    ),
+  },
+  {
+    title: "A building block for developers",
+    Svg: require("@site/static/img/logo.svg").default,
+    description: <>Integrate OpenAssistant into your application.</>,
+  },
+];
+
+function Feature({ title, Svg, description }: FeatureItem) {
+  return (
+    <div className={clsx("col col--4")}>
+      <div className="text--center">
+        <Svg className={styles.featureSvg} role="img" />
+      </div>
+      <div className="text--center padding-horiz--md">
+        <h3>{title}</h3>
+        <p>{description}</p>
+      </div>
+    </div>
+  );
+}
+
+export default function HomepageFeatures(): JSX.Element {
+  return (
+    <section className={styles.features}>
+      <div className="container">
+        <div className="row">
+          {FeatureList.map((props, idx) => (
+            <Feature key={idx} {...props} />
+          ))}
+        </div>
+      </div>
+    </section>
+  );
+}

docs/src/components/HomepageFeatures/styles.module.css

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+.features {
+  display: flex;
+  align-items: center;
+  padding: 2rem 0;
+  width: 100%;
+}
+
+.featureSvg {
+  height: 200px;
+  width: 200px;
+}