directory: add to website, send terms, sort search results (#2950)

* directory: add to website, send terms, sort search results

* corrections

website/src/_data/docs_dropdown.json

@@ -4,6 +4,10 @@
             "title": "docs-dropdown-1",
             "url": "/docs/simplex.html"
         },
+        {
+            "title": "docs-dropdown-8",
+            "url": "/docs/directory.html"
+        },
         {
             "title": "docs-dropdown-2",
             "url": "/docs/android.html"

website/src/_data/docs_sidebar.json

@@ -18,6 +18,7 @@
             "menu": "Reference",
             "data": [
                 "SIMPLEX.md",
+                "DIRECTORY.md",
                 "ANDROID.md",
                 "CLI.md",
                 "SQL.md",