Codegen: Generate docs for composable kinds (#61719)

* Generate docs for composable kinds

* Fix getting the kind schema

* Generate composable kinds docs

* Add disclaimer to the generated docs

* Change docs disclaimer

docs/sources/developers/kinds/composable/statpanelcfg/schema-reference.md

@@ -0,0 +1,31 @@
+---
+keywords:
+  - grafana
+  - schema
+title: StatPanelCfg kind
+---
+> Both documentation generation and kinds schemas are in active development and subject to change without prior notice.
+
+# StatPanelCfg kind
+
+### Maturity: experimental
+### Version: 0.0
+
+## Properties
+
+| Property       | Type                    | Required | Description |
+|----------------|-------------------------|----------|-------------|
+| `PanelOptions` | [object](#paneloptions) | **Yes**  |             |
+
+## PanelOptions
+
+### Properties
+
+| Property      | Type   | Required | Description                                                                       |
+|---------------|--------|----------|-----------------------------------------------------------------------------------|
+| `colorMode`   | string | No       | TODO docs Possible values are: `value`, `background`, `none`.                     |
+| `graphMode`   | string | No       | TODO docs Possible values are: `none`, `line`, `area`.                            |
+| `justifyMode` | string | No       | TODO docs Possible values are: `auto`, `center`.                                  |
+| `textMode`    | string | No       | TODO docs Possible values are: `auto`, `value`, `value_and_name`, `name`, `none`. |
+
+