feat(vite-plugin-angular): add support for file replacements per environment

[brandonroberts]

PR Checklist

Closes #

What is the new behavior?

Adds support for file replacements to the analog and vite-plugin-angular plugins. File replacements can also be configured per environment, so client/SSR-specific replacements can be configured.

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

// https://vitejs.dev/config/
export default defineConfig(({ mode }) => {
  return {
    plugins: [
      analog({
        fileReplacements:
          mode === 'production'
            ? [
                {
                  replace: 'src/environments/environment.ts',
                  with: 'src/environments/environment.prod.ts',
                },
                {
                  replace: 'src/app/pages/shipping/shipping-service.ts', // client-only service
                  ssr: 'src/app/pages/shipping/shipping-service-server.ts', // server-only service
                },
              ]
            : [
                {
                  replace: 'src/app/pages/shipping/shipping-service.ts', // client-only service
                  ssr: 'src/app/pages/shipping/shipping-service-server.ts', // server-only service
                },
              ],
      }),
    ]
  };
});

Does this PR introduce a breaking change?

• Yes
• No

Other information

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