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.

test/unit/identity/IdentityUtil.test.ts

@@ -0,0 +1,24 @@
+import { importOidcProvider } from '../../../src/identity/IdentityUtil';
+
+describe('IdentityUtil', (): void => {
+  it('avoids dynamic imports when testing with Jest.', async(): Promise<void> => {
+    const oidc = await importOidcProvider();
+    expect(oidc.default).toBeDefined();
+    expect(oidc.interactionPolicy).toBeDefined();
+  });
+
+  it('imports the oidc-provider package when not running jest.', async(): Promise<void> => {
+    // We need to fool the IDP factory into thinking we are not in a test run
+    const jestWorkerId = process.env.JEST_WORKER_ID;
+    const nodeEnv = process.env.NODE_ENV;
+    delete process.env.JEST_WORKER_ID;
+    delete process.env.NODE_ENV;
+
+    const oidc = await importOidcProvider();
+    expect(oidc.default).toBeDefined();
+    expect(oidc.interactionPolicy).toBeDefined();
+
+    process.env.JEST_WORKER_ID = jestWorkerId;
+    process.env.NODE_ENV = nodeEnv;
+  });
+});