feat: Full rework of account management

Complete rewrite of the account management and related systems.
Makes the architecture more modular,
allowing for easier extensions and configurations.

src/identity/interaction/OidcControlHandler.ts

@@ -0,0 +1,16 @@
+import { ControlHandler } from './ControlHandler';
+import type { Json } from './InteractionUtil';
+import type { JsonInteractionHandlerInput } from './JsonInteractionHandler';
+
+/**
+ * A {@link ControlHandler} that only returns results if there is an active OIDC interaction.
+ */
+export class OidcControlHandler extends ControlHandler {
+  protected async generateControls(input: JsonInteractionHandlerInput): Promise<NodeJS.Dict<Json>> {
+    if (!input.oidcInteraction) {
+      return {};
+    }
+
+    return super.generateControls(input);
+  }
+}