Add built-in support for font size-adjustment

### Command

build

### Description

As mentioned in https://github.com/angular/angular-cli/issues/27038#issuecomment-1935614283 the Aurora team strongly recommends addressing size-adjustment directly within the Angular CLI.

They've collaborated with the Nuxt team to develop a Vite plugin that automatically calculates CSS adjustments for size, which you can find here: https://github.com/unjs/fontaine. Additionally, this functionality is available through CSS generation: https://github.com/seek-oss/capsize.

The issue targets the Angular CLI build command and references the unjs/fontaine Vite plugin and seek-oss/capsize CSS generation. Read those references first, then determine the CLI integration scope; done would mean built-in font size-adjustment support, but no files, tests, or acceptance criteria are specified.

Written by the indexing model from the issue text.