feat: add support for configuring additional page/content route sources

[brandonroberts]

PR Checklist

Related to #904

What is the new behavior?

• Page and content routes can be sourced from directories outside the main src/app/pages and src/content directories
• Adds support for discovering page routes and content from projects in a monorepo
• Adds support to the Vite plugin for Angular to include additional files in compilation
• Allows the createRoutes function to be used with the Angular application builder without overrides

/// <reference types="vitest" />

import { defineConfig } from 'vite';
import analog from '@analogjs/platform';

// https://vitejs.dev/config/
export default defineConfig(({ mode }) => ({
  build: {
    target: ['es2020'],
  },
  resolve: {
    mainFields: ['module'],
  },
  plugins: [
    analog({
      // scans for `**/*.page.{ts,analog}`. Must be inside a `pages` directory
      additionalPagesDirs: ['/libs/shared/feature'],

      // scans for `**/*.{md,agx}`. Must be inside a `content` directory
      additionalContentDirs: ['/libs/shared/feature'],

      // scans for `**/*.{ts}`. Must be inside a `routes` directory
      additionalAPIDirs: ['/libs/shared/feature/src/api']

    })
  ],
  test: {
    globals: true,
    environment: 'jsdom',
    setupFiles: ['src/test-setup.ts'],
    include: ['**/*.spec.ts'],
    reporters: ['default'],
  },
  define: {
    'import.meta.vitest': mode !== 'production',
  },
}));

Does this PR introduce a breaking change?

• Yes
• No

Other information

[optional] What gif best describes this PR or how it makes you feel?

[netlify]

✅ Deploy Preview for analog-ng-app ready!

Name	Link
🔨 Latest commit	abb4ab7
🔍 Latest deploy log	https://app.netlify.com/sites/analog-ng-app/deploys/66a315d8e3fc1e0008155d56
😎 Deploy Preview	https://deploy-preview-1228--analog-ng-app.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[netlify]

✅ Deploy Preview for analog-app ready!

Name	Link
🔨 Latest commit	abb4ab7
🔍 Latest deploy log	https://app.netlify.com/sites/analog-app/deploys/66a315d867850e0008ea11d7
😎 Deploy Preview	https://deploy-preview-1228--analog-app.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[netlify]

✅ Deploy Preview for analog-blog ready!

Name	Link
🔨 Latest commit	abb4ab7
🔍 Latest deploy log	https://app.netlify.com/sites/analog-blog/deploys/66a315d89403750008e20f06
😎 Deploy Preview	https://deploy-preview-1228--analog-blog.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[netlify]

✅ Deploy Preview for analog-docs ready!

Name	Link
🔨 Latest commit	abb4ab7
🔍 Latest deploy log	https://app.netlify.com/sites/analog-docs/deploys/66a315d80868c80008f794f9
😎 Deploy Preview	https://deploy-preview-1228--analog-docs.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[nckirik]

we can also add a config option for API route dirs. this is currently available through nitro.scanDirs config. just an alias would be enough I think

[brandonroberts]

we can also add a config option for API route dirs. this is currently available through nitro.scanDirs config. just an alias would be enough I think

Added the additionalAPIDirs option for scanning API routes