feat: Add current_user_roles() Jinja macro (#32770)

docs/docs/configuration/sql-templating.mdx

@@ -220,6 +220,36 @@ cache key by adding the following parameter to your Jinja code:
 {{ current_user_email(add_to_cache_keys=False) }}
 ```
 
+**Current User Roles**
+
+The `{{ current_user_roles() }}` macro returns an array of roles for the logged in user.
+
+If you have caching enabled in your Superset configuration, then by default the roles value will be used
+by Superset when calculating the cache key. A cache key is a unique identifier that determines if there's a
+cache hit in the future and Superset can retrieve cached data.
+
+You can disable the inclusion of the roles value in the calculation of the
+cache key by adding the following parameter to your Jinja code:
+
+```python
+{{ current_user_roles(add_to_cache_keys=False) }}
+```
+
+You can json-stringify the array by adding `|tojson` to your Jinja code:
+```python
+{{ current_user_roles()|tojson }}
+```
+
+You can use the `|where_in` filter to use your roles in a SQL statement. For example, if `current_user_roles()` returns `['admin', 'viewer']`, the following template:
+```python
+SELECT * FROM users WHERE role IN {{ current_user_roles()|where_in }}
+```
+
+Will be rendered as:
+```sql
+SELECT * FROM users WHERE role IN ('admin', 'viewer')
+```
+
 **Custom URL Parameters**
 
 The `{{ url_param('custom_variable') }}` macro lets you define arbitrary URL