chore: add scim service provider config endpoint (#15235)

Adds a static `/scim/v2/ServiceProviderConfig` endpoint. Our scim
support is static, so the response config is also defined statically.

docs/reference/api/enterprise.md

@@ -2007,6 +2007,24 @@ Status Code **200**
 
 To perform this operation, you must be authenticated. [Learn more](authentication.md).
 
+## SCIM 2.0: Service Provider Config
+
+### Code samples
+
+```shell
+# Example request using curl
+curl -X GET http://coder-server:8080/api/v2/scim/v2/ServiceProviderConfig
+
+```
+
+`GET /scim/v2/ServiceProviderConfig`
+
+### Responses
+
+| Status | Meaning                                                 | Description | Schema |
+| ------ | ------------------------------------------------------- | ----------- | ------ |
+| 200    | [OK](https://tools.ietf.org/html/rfc7231#section-6.3.1) | OK          |        |
+
 ## SCIM 2.0: Get users
 
 ### Code samples