Move faker plugin back to external (plugins-external/faker)

plugins-external/faker/tests/init.test.ts

@@ -0,0 +1,12 @@
+import { describe, expect, it } from 'vitest';
+
+describe('template-function-faker', () => {
+  it('exports all expected template functions', async () => {
+    const { plugin } = await import('../src/index');
+    const names = plugin.templateFunctions?.map((fn) => fn.name).sort() ?? [];
+
+    // Snapshot the full list of exported function names so we catch any
+    // accidental additions, removals, or renames across faker upgrades.
+    expect(names).toMatchSnapshot();
+  });
+});