[Feature Request] Update SSR template to Express 5

[selaimanh]

Title: [Feature Request] Update SSR Scaffold to Express 5.0

Description

Since Express 5.0.0 was officially released as stable (October 2024), it is now the current industry standard. However, the current Quasar SSR starter template (via @quasar/app-vite / @quasar/app-webpack) still scaffolds projects using Express 4.

Currently, new users starting a Quasar SSR project are encountering a breaking change error:
error: Missing parameter name at index 1: *; visit https://git.new/pathToRegexpError for info

Why upgrade to Express 5?

• Native Async Support: Express 5 now handles rejected promises automatically. This simplifies SSR middlewares by removing the need for manual try/catch or helper packages like express-async-errors.
• Path Matching: The upgrade to path-to-regexp is more strict and robust, which is better for long-term project maintenance.
• Modernization: To avoid technical debt for new developers, the framework's default templates should align with the latest stable versions of its core dependencies.

Proposed Changes

1. Dependency Update: Update the SSR template package.json to use "express": "^5.0.0".
2. Routing Template: Update src-ssr/server.js (and .ts) to fix the "catch-all" route syntax:
   • Old: app.get(resolve.urlPath('*'), (req, res) => { ... })
   • New: app.get(resolve.urlPath(/(.*)/), (req, res) => { ... })
3. Typings: Ensure @types/express is updated to the corresponding version to avoid TypeScript mismatches with RegExp paths.

Additional Context

I recently ran into the PathError on a fresh install. This can be quite confusing for newcomers who expect the "Out of the box" experience to work with the latest Node.js ecosystem packages.

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Submitted by a Quasar user seeking to keep the SSR mode modern and bug-free.