Migrate to using docusaurus, rather than docsify for documentation (#603)

* Add docusaurus documentation (to replace the docsify setup
* Remove older docs
* Specify documentation as the gh pages build action working directory

documentation/src/components/HomepageFeatures/index.js

@@ -0,0 +1,61 @@
+import clsx from 'clsx';
+import Heading from '@theme/Heading';
+import styles from './styles.module.css';
+
+const FeatureList = [
+  {
+    title: 'Connect your knowledge',
+    Svg: require('@site/assets/img/mountains-lake.svg').default,
+    description: (
+      <>
+        Khoj can understand your PDFs, markdown, org, and other plaintext files. Connect your knowledge base using one of our <a href="https://khoj.dev/downloads">desktop apps</a> or <a href="/docs/category/clients">other client apps</a>.
+      </>
+    ),
+  },
+  {
+    title: 'Simplify your thinking',
+    Svg: require('@site/assets/img/lightbulb-plant.svg').default,
+    description: (
+      <>
+        Get your knowledge base out of your head and into Khoj. Khoj is a tool for thinking, learning, and making things.
+      </>
+    ),
+  },
+  {
+    title: 'Run privately',
+    Svg: require('@site/assets/img/folder_security.svg').default,
+    description: (
+      <>
+        You can run Khoj on your own computer, or on your own server. All of our code is open source, and you can <a href="/docs/get-started/setup">set it up</a> in minutes.
+      </>
+    ),
+  },
+];
+
+function Feature({Svg, title, description}) {
+  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">
+        <Heading as="h3">{title}</Heading>
+        <p>{description}</p>
+      </div>
+    </div>
+  );
+}
+
+export default function HomepageFeatures() {
+  return (
+    <section className={styles.features}>
+      <div className="container">
+        <div className="row">
+          {FeatureList.map((props, idx) => (
+            <Feature key={idx} {...props} />
+          ))}
+        </div>
+      </div>
+    </section>
+  );
+}

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

@@ -0,0 +1,11 @@
+.features {
+  display: flex;
+  align-items: center;
+  padding: 2rem 0;
+  width: 100%;
+}
+
+.featureSvg {
+  height: 200px;
+  width: 200px;
+}

documentation/src/css/custom.css

@@ -0,0 +1,30 @@
+/**
+ * Any CSS included here will be global. The classic template
+ * bundles Infima by default. Infima is a CSS framework designed to
+ * work well for content-centric websites.
+ */
+
+/* You can override the default Infima variables here. */
+:root {
+  --ifm-color-primary: #fcc50b;
+  --ifm-color-primary-dark: #fcc50b;
+  --ifm-color-primary-darker: #fcc50b;
+  --ifm-color-primary-darkest: #fcc50b;
+  --ifm-color-primary-light: #fcc50b;
+  --ifm-color-primary-lighter: #fcc50b;
+  --ifm-color-primary-lightest: #fcc50b;
+  --ifm-code-font-size: 95%;
+  --docusaurus-highlighted-code-line-bg: rgba(0, 0, 0, 0.1);
+}
+
+/* For readability concerns, you should choose a lighter palette in dark mode. */
+[data-theme='dark'] {
+  --ifm-color-primary: #fcc50b;
+  --ifm-color-primary-dark: #fcc50b;
+  --ifm-color-primary-darker: #fcc50b;
+  --ifm-color-primary-darkest: #fcc50b;
+  --ifm-color-primary-light: #fcc50b;
+  --ifm-color-primary-lighter: #fcc50b;
+  --ifm-color-primary-lightest: #fcc50b;
+  --docusaurus-highlighted-code-line-bg: rgba(0, 0, 0, 0.3);
+}

documentation/src/pages/index.js

@@ -0,0 +1,43 @@
+import clsx from 'clsx';
+import Link from '@docusaurus/Link';
+import useDocusaurusContext from '@docusaurus/useDocusaurusContext';
+import Layout from '@theme/Layout';
+import HomepageFeatures from '@site/src/components/HomepageFeatures';
+
+import Heading from '@theme/Heading';
+import styles from './index.module.css';
+
+function HomepageHeader() {
+  const {siteConfig} = useDocusaurusContext();
+  return (
+    <header className={clsx('hero hero--primary', styles.heroBanner)}>
+      <div className="container">
+        <Heading as="h1" className="hero__title">
+          {siteConfig.title}
+        </Heading>
+        <p className="hero__subtitle">{siteConfig.tagline}</p>
+        <div className={styles.buttons}>
+          <Link
+            className="button button--secondary button--lg"
+            to="/docs/get-started/overview">
+            Get Started →
+          </Link>
+        </div>
+      </div>
+    </header>
+  );
+}
+
+export default function Home() {
+  const {siteConfig} = useDocusaurusContext();
+  return (
+    <Layout
+      title={`👋🏽 from ${siteConfig.title}`}
+      description="Get started with the Khoj Documentation">
+      <HomepageHeader />
+      <main>
+        <HomepageFeatures />
+      </main>
+    </Layout>
+  );
+}

documentation/src/pages/index.module.css

@@ -0,0 +1,23 @@
+/**
+ * CSS files with the .module.css suffix will be treated as CSS modules
+ * and scoped locally.
+ */
+
+.heroBanner {
+  padding: 4rem 0;
+  text-align: center;
+  position: relative;
+  overflow: hidden;
+}
+
+@media screen and (max-width: 996px) {
+  .heroBanner {
+    padding: 2rem;
+  }
+}
+
+.buttons {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}

documentation/src/pages/markdown-page.md

@@ -0,0 +1,7 @@
+---
+title: Markdown page example
+---
+
+# Markdown page example
+
+You don't need React to write simple standalone pages.