Added Opensearch credential (#2458)

* Added Openserch credential

* fix issues detected by linter

* rename to camelcase openSearchUrl

* Update OpenSearch.ts

---------

Co-authored-by: patrick <patrick.alves@br.experian.com>
Co-authored-by: Henry Heng <henryheng@flowiseai.com>

packages/components/credentials/OpenSearchUrl.credential.ts

@@ -0,0 +1,24 @@
+import { INodeParams, INodeCredential } from '../src/Interface'
+
+class OpenSearchUrl implements INodeCredential {
+    label: string
+    name: string
+    version: number
+    description: string
+    inputs: INodeParams[]
+
+    constructor() {
+        this.label = 'OpenSearch'
+        this.name = 'openSearchUrl'
+        this.version = 1.0
+        this.inputs = [
+            {
+                label: 'OpenSearch Url',
+                name: 'openSearchUrl',
+                type: 'string'
+            }
+        ]
+    }
+}
+
+module.exports = { credClass: OpenSearchUrl }