0.11.0: arc42 and ArchiMate examples; ref in every diagram kind

Six example models next to the three C4 ones: arc42 (Cinema Tickets, IoT
Telemetry, Team Wiki) by section, ArchiMate (Insurance Claims, HR
Onboarding, Logistics Tracking) by layer, each validated with 0 errors and
0 warnings. resolveRefs and the editor schemas now take ref: in workflow
and dataflow nodes, sequence participants and lifecycle states, as the
skill already did. Example tests check each framework's folders.

test/integration/suite.ts

@@ -449,7 +449,11 @@ export async function run(): Promise<void> {
       window.showQuickPick = originalPick;
       window.showInputBox = originalInput;
     }
-    assert.deepEqual(labels, ['C4 - Standard Web App', 'C4 - E-Shop', 'C4 - Event-Based Integration']);
+    assert.deepEqual(labels, [
+      'C4 - Standard Web App', 'C4 - E-Shop', 'C4 - Event-Based Integration',
+      'arc42 - Cinema Tickets', 'arc42 - IoT Telemetry', 'arc42 - Team Wiki',
+      'ArchiMate - Insurance Claims', 'ArchiMate - HR Onboarding', 'ArchiMate - Logistics Tracking',
+    ]);
     assert.match(String(existingNameMessage), /already exists/);
     const folder = vscode.Uri.joinPath(parent, 'shop-two');
     const main = vscode.Uri.joinPath(folder, 'main.archify');