docs: add file for users to see status of feature flags (#13402)

* add file for users to see status of feature flags

* move comment

* update flags per feedback

* move to subfolder and improve docs

* move CODE_OF_CONDUCT to root

docs/src/pages/community.tsx

@@ -51,7 +51,7 @@ const links = [
     'join our monthly virtual meetups and register for any upcoming events',
   ],
   [
-    'https://github.com/apache/superset/blob/master/INTHEWILD.md',
+    'https://github.com/apache/superset/blob/master/RESOURCES/INTHEWILD.md',
     'Organizations',
     'a list of some of the organizations using Superset in production',
   ],

docs/src/pages/docs/installation/configuring.mdx

@@ -192,17 +192,7 @@ DEFAULT_FEATURE_FLAGS = {
 }
 ```
 
-Here is a list of flags and descriptions:
-
-- `ENABLE_EXPLORE_JSON_CSRF_PROTECTION`: For some security concerns, you may need to enforce CSRF
-  protection on all query request to the `explore_json` endpoint. When
-  `ENABLE_EXPLORE_JSON_CSRF_PROTECTION` is set to true, your users cannot make GET request to
-  `explore_json`. The default value for this feature is `False` and `explore_json` will accept both
-  GET and POST request. See [PR 7935](https://github.com/apache/superset/pull/7935) for
-  more details.
-
-- `PRESTO_EXPAND_DATA`: When this feature is enabled, nested types in Presto will be expanded into
-  extra columns and / or arrays. This is experimental, and doesn’t work with all nested types.
+A current list of feature flags can be found in `RESOURCES/FEATURE_FLAGS.md`
 
 ### SIP 15
 

docs/src/pages/docs/introduction.mdx

@@ -56,4 +56,4 @@ production environment inside Kubernetes and serves 600+ daily active users view
 a day.
 
 You can find a partial list of industries and companies embracing Superset
-[on this page in GitHub](https://github.com/apache/superset/blob/master/INTHEWILD.md).
+[on this page in GitHub](https://github.com/apache/superset/blob/master/RESOURCES/INTHEWILD.md).