feat(runtime): add new Go-specific API level feature

- Introduce new GoFeatures API level setting for protobuf
- Add renamed_services map to GoSettings for service name customization
- Update enum deprecation warnings and improve documentation links
- Refactor error_details.proto to enhance field-level error handlingrefactor(runtime): remove unused keyfunc field from JWT config

- Remove keyfunc field from Config struct
- Delete GetKeyfunc method
- Update validation logic to remove keyfunc checks
- Remove keyfunc from protobuf descriptor

proto/security/jwt/v1/config.proto

@@ -32,11 +32,6 @@ message Config {
     json_name = "key2",
     (gnostic.openapi.v3.property) = {description: "The secondary key used for signing the token."}
   ];
-  string keyfunc = 4 [
-    json_name = "keyfunc",
-    (validate.rules).string.min_len = 1,
-    (gnostic.openapi.v3.property) = {description: "The function used to retrieve the key for validation."}
-  ];
   int64 access_token_lifetime = 5 [
     json_name = "access_token_lifetime",
     (validate.rules).int64.gt = 0,