feat(ls): provide OpenAPI 3.1.0 Example allowed fields link rule

Refs #2061

packages/apidom-ls/src/config/openapi/example/lint/allowed-fields-3-1.ts

@@ -0,0 +1,22 @@
+import ApilintCodes from '../../../codes';
+import { LinterMeta } from '../../../../apidom-language-types';
+
+// eslint-disable-next-line @typescript-eslint/naming-convention
+const allowedFields3_1Lint: LinterMeta = {
+  code: ApilintCodes.NOT_ALLOWED_FIELDS,
+  source: 'apilint',
+  message: 'Object includes not allowed fields',
+  severity: 1,
+  linterFunction: 'allowedFields',
+  linterParams: [['summary', 'description', 'value', 'externalValue'], 'x-'],
+  marker: 'key',
+  conditions: [
+    {
+      function: 'missingField',
+      params: ['$ref'],
+    },
+  ],
+  targetSpecs: [{ namespace: 'openapi', version: '3.1.0' }],
+};
+
+export default allowedFields3_1Lint;

packages/apidom-ls/src/config/openapi/example/lint/index.ts

@@ -1,4 +1,5 @@
 import allowedFields3_0Lint from './allowed-fields-3-0';
+import allowedFields3_1Lint from './allowed-fields-3-1';
 import summaryTypeLint from './summary--type';
 import descriptionTypeLint from './description--type';
 import valueMutuallyExclusiveLint from './value--mutually-exclusive';
@@ -10,6 +11,7 @@ const lints = [
   valueMutuallyExclusiveLint,
   externalValueFormatURILint,
   allowedFields3_0Lint,
+  allowedFields3_1Lint,
 ];
 
 export default lints;