Follow up tasks for Python template

[eerhardt]

Now that #12136 is merged, we should fix the following issues:

• Migrate AddViteApp and WithNpmPackageInstallation from https://github.com/CommunityToolkit/Aspire/blob/main/src/CommunityToolkit.Aspire.Hosting.NodeJS.Extensions/NodeJSHostingExtensions.cs to the dotnet/aspire repo. (Add ViteApp and Npm Package Manager #12283)
  • This way our template isn't dependent on an external repo, which has a dependency on us. The circular dependency isn't ideal.
  • cc @aaronpowell
• Remove the dockerfile and replace with a mechanism that publishes the frontend static files to the built-in python dockerfile Remove Dockerfile from Python/Javascript Aspire Templates Using Pipeline Steps #12162
• Should we rename the api_service folder? How about app? (Enhance python starter template #12215)
• The python app should .WaitFor the cache (Enhance python starter template #12215)
• Make redis cache optional (Enhance python starter template #12215)
• The python app returns 500 during aspire run because the static folder doesn't exist. (Enhance python starter template #12215)

cc @davidfowl

[eerhardt]

This is complete with the above PRs.