chore: add manifest.json (#2100)

docs/manifest.json

@@ -0,0 +1,48 @@
+{
+    "versions": ["0.6.2"],
+    "routes": [
+        {
+            "title": "About",
+            "description": "About Coder",
+            "path": "./about"
+        },
+        {
+            "title": "Installation",
+            "description": "Learn how to install and deploy Coder.",
+            "path": "./INSTALL"
+        },
+        {
+            "title": "Templates",
+            "description": "Learn about templates, which define the infrastructure underlying workspaces.",
+            "path": "./templates.md",
+            "icon": ""
+        },
+        {
+            "title": "Workspaces",
+            "description": "Learn about Coder workspaces.",
+            "path": "./WORKSPACES"
+        },
+        {
+            "title": "Contributing",
+            "description": "Learn how to contribute to Coder.",
+            "path": "./CONTRIBUTING",
+            "children": [
+                {
+                    "title": "Code of Conduct",
+                    "description": "See the code of conduct for contributing to Coder.",
+                    "path": "./CODE_OF_CONDUCT"
+                },
+                {
+                    "title": "Contributors",
+                    "description": "See a contributors to Coder.",
+                    "path": "./CONTRIBUTORS"
+                }
+            ]
+        },
+        {
+            "title": "Security policy",
+            "description": "Learn how to report vulnerabilities in Coder.",
+            "path": "./SECURITY"
+        }
+    ]
+}