refactor: Use new angular/build and modern compiler options

[muuvmuuv]

Hey, since NG19 is close to the doors and custom-esbuild still does not use the new @angular/build (and therefore no Vite directly) I started working on migrating these.

Just look at the code not the tools I added or removed, I couldn't get yarn running (it didn't added @angular/build in node_modules and other errors) or the tests without the modifications. I have also added my changes from #1730. The full codes runs and tests are successful. Only indexHtmlTransformer is not exported from Angular itself for some reason.

The final build-dist was also tested against an enterprise application I work on, build and dev-server run better than before on ng19. Ng18 was not tested because I think it would be a good start to deprecate or remove some things now.

I don't know why it is the case but tsNodeRegister and patchBuilderContext were no longer required in my case.

[muuvmuuv]

Just forked your project and modified it a bit to my needs just that you are aware of: https://github.com/muuvmuuv/angular-extended-builders. It will mainly focus on my end to test beta releases on Angular.

[just-jeb]

Amazing, thanks for the effort 🙏🏿. It's a great timing for this change, so that we can release it as part of the major version.
Also thanks for the heads up about your fork. Of course if you implement in your repo anything that you think can be good for everyone you're welcome to back port it here.

[muuvmuuv]

Yeah ofc! Once you implement parts of it I will also back port stuff that I add on my end.

Index transformer is now working as before so compatibility is given to previous versions: https://github.com/muuvmuuv/angular-extended-builders/blob/main/projects/angular-extended-builder/src/application/index.ts#L38