feat(FN-3907): add fusion-plugin-cli-printing-press plugin scaffold

Restores and stabilizes a new `fusion-plugin-cli-printing-press` plugin scaffold, including the plugin manifest, TypeScript configuration, source entry point, and test suite, with vitest aliases added in a follow-up fix.

Fusion-Task-Id: FN-3907

plugins/fusion-plugin-cli-printing-press/vitest.config.ts

@@ -0,0 +1,26 @@
+import { defineConfig } from "vitest/config";
+import { fileURLToPath } from "node:url";
+import { computeMaxWorkers } from "../../packages/core/src/__test-utils__/vitest-workers";
+
+const maxWorkers = computeMaxWorkers();
+
+export default defineConfig({
+  resolve: {
+    alias: [
+      { find: "@fusion/core", replacement: fileURLToPath(new URL("../../packages/core/src/index.ts", import.meta.url)) },
+      {
+        find: "@fusion/plugin-sdk",
+        replacement: fileURLToPath(new URL("../../packages/plugin-sdk/src/index.ts", import.meta.url)),
+      },
+    ],
+  },
+  test: {
+    include: ["src/**/*.test.{ts,tsx}"],
+    environment: "node",
+    setupFiles: [fileURLToPath(new URL("../../packages/core/src/__test-utils__/vitest-setup.ts", import.meta.url))],
+    globalSetup: [fileURLToPath(new URL("../../packages/core/src/__test-utils__/vitest-teardown.ts", import.meta.url))],
+    pool: "threads",
+    maxWorkers,
+    poolOptions: { threads: { minThreads: 1, maxThreads: maxWorkers }, forks: { minForks: 1, maxForks: maxWorkers } },
+  },
+});