Adopt the template for applications

Ninguém assumiu esta issue ainda.

Currently, the template is really focused on libraries, not on end-user software, such as ML or data analysis pipelines, web portals, scripts, etc. Researchers are more frequently starting a new end-user project than a library.

There are usually different expectations from end-user software than from a library: the environment should be reproducible, e.g., require some sort of a lock file; package data setup may be required; Dockerfile or entry points usually should be set up. I think the next "big thing" for PPT may be support for projects like that, while we can use in-house end-user projects to test it, e.g., hyrax (which, of course, is a library, but also a user-level script), hats-import scripts, "cone search v2.0", and individual team members' projects (I'd be happy to test it with uncle-val).

I propose to use `uv` for the lock file and tooling support, which makes it easy to manage virtual environments and gives a consistent way of running Python tools and commands via, e.g., `uv run pytest` and `uv run python -m my-module`.

Comece examinando o template atual focado em bibliotecas e os fluxos de trabalho dos usuários finais mencionados na issue, incluindo hyrax e hats-import. Avalie como os arquivos de lock gerenciados pelo uv, os ambientes reproduzíveis, a configuração dos dados do pacote, o suporte a Dockerfile e os entry points devem se encaixar; considera-se concluído quando houver um design de template acordado para esses projetos de aplicação.

Escrita pelo modelo de indexação a partir do texto da issue.