feat: Add Miro credential only node (#12746)

Co-authored-by: Jonathan Bennetts <jonathan.bennetts@gmail.com>

packages/nodes-base/credentials/MiroOAuth2Api.credentials.ts

@@ -0,0 +1,61 @@
+import type { Icon, ICredentialType, INodeProperties } from 'n8n-workflow';
+
+export class MiroOAuth2Api implements ICredentialType {
+	name = 'miroOAuth2Api';
+
+	extends = ['oAuth2Api'];
+
+	displayName = 'Miro OAuth2 API';
+
+	documentationUrl = 'miro';
+
+	icon: Icon = 'file:icons/Miro.svg';
+
+	httpRequestNode = {
+		name: 'Miro',
+		docsUrl: 'https://developers.miro.com/reference/overview',
+		apiBaseUrl: 'https://api.miro.com/v2/',
+	};
+
+	properties: INodeProperties[] = [
+		{
+			displayName: 'Grant Type',
+			name: 'grantType',
+			type: 'hidden',
+			default: 'authorizationCode',
+		},
+		{
+			displayName: 'Authorization URL',
+			name: 'authUrl',
+			type: 'hidden',
+			default: 'https://miro.com/oauth/authorize',
+			required: true,
+		},
+		{
+			displayName: 'Access Token URL',
+			name: 'accessTokenUrl',
+			type: 'hidden',
+			default: 'https://api.miro.com/v1/oauth/token',
+			required: true,
+		},
+		{
+			displayName: 'Scope',
+			name: 'scope',
+			type: 'hidden',
+			default: '',
+			required: true,
+		},
+		{
+			displayName: 'Auth URI Query Parameters',
+			name: 'authQueryParameters',
+			type: 'hidden',
+			default: '',
+		},
+		{
+			displayName: 'Authentication',
+			name: 'authentication',
+			type: 'hidden',
+			default: 'body',
+		},
+	];
+}