✨ Add Discourse Node (#1348)

* ✨ Discourse Node

* ⚡ Add missing credential file

* ⚡ Improvements

* ⚡ Improvements

* ⚡ Minor improvements on Discourse Node

Co-authored-by: Jan Oberhauser <jan.oberhauser@gmail.com>

packages/nodes-base/credentials/DiscourseApi.credentials.ts

@@ -0,0 +1,33 @@
+import {
+	ICredentialType,
+	NodePropertyTypes,
+} from 'n8n-workflow';
+
+export class DiscourseApi implements ICredentialType {
+	name = 'discourseApi';
+	displayName = 'Discourse API';
+	documentationUrl = 'discourse';
+	properties = [
+		{
+			displayName: 'URL',
+			name: 'url',
+			required: true,
+			type: 'string' as NodePropertyTypes,
+			default: '',
+		},
+		{
+			displayName: 'API Key',
+			name: 'apiKey',
+			required: true,
+			type: 'string' as NodePropertyTypes,
+			default: '',
+		},
+		{
+			displayName: 'Username',
+			name: 'username',
+			required: true,
+			type: 'string' as NodePropertyTypes,
+			default: '',
+		},
+	];
+}