Add blog (#1203)

* add blog and update docusaurus

docs/docusaurus.config.js

@@ -41,7 +41,22 @@ const config = {
         api: {
           path: "docs/api/openapi.json",
         },
-        blog: false,
+        blog: {
+          routeBasePath: "/blog",
+          showReadingTime: true,
+          blogTitle: "OpenAssistant Blog",
+          blogDescription: "Home of the OpenAssistant blog.",
+          blogSidebarTitle: "Blog Posts",
+          blogSidebarCount: "ALL",
+          postsPerPage: "ALL",
+          feedOptions: {
+            type: "all",
+            title: "OpenAssistant Blog",
+            description: "Home of the OpenAssistant blog.",
+            language: "en",
+            copyright: `Copyright © ${new Date().getFullYear()} OpenAssistant.`,
+          },
+        },
         theme: {
           customCss: require.resolve("./src/css/custom.css"),
         },
@@ -65,6 +80,7 @@ const config = {
             position: "left",
             label: "Docs",
           },
+          { to: "/blog", label: "Blog", position: "left" },
           { to: "/api", label: "API", position: "left" },
           {
             href: "https://github.com/LAION-AI/Open-Assistant",