`github.com` is hardcoded in CI badge template even with alternate `host`

[alametti]

First-time user so I apologize if I am missing something.

I interactively created a new project with:

julia> using PkgTemplates

julia> Template(interactive=true)("JuliaActionsTest")
Template keywords to customize:
[press: Enter=toggle, a=all, n=none, d=done, q=abort]
[...]
   [X] host ("github.com")
[...]        
Select Git repository hosting service:
   github.com
   gitlab.com
   bitbucket.org
 > Other
Enter value for 'host' (default: github.com): git.mydomain.tld

However, this was the default README.md:

# JuliaActionsTest

[![Build Status](https://github.com/myusername/JuliaActionsTest.jl/actions/workflows/CI.yml/badge.svg?branch=main)](https://github.com/myusername/JuliaActionsTest.jl/actions/workflows/CI.yml?query=branch%3Amain)

I assume that this is because github.com is hardcoded in the template instead of using the user-defined host:

PkgTemplates.jl/src/plugins/ci.jl

Line 66 in 3ca7778

"https://github.com/{{{USER}}}/{{{PKG}}}.jl/actions/workflows/$(p.destination)/badge.svg?branch={{{BRANCH}}}",

[oxinabox]

I think you are correct.
Under what circumstances might it not be,
and can in those circumstances we rely on the badges having the same URL endpoint?

[alametti]

In my case (Forgejo), the badge endpoint turned out to be: https://{{{HOST}}}/{{{USER}}}/{{{REPO}}}/actions?workflow=$(p.destination)&branch={{{BRANCH}}}.

But on second thought, this probably isn't a big deal, because the autogenerated CI templates are also Github-specific and not portable. So if a user is capable of setting up CI using an alternate system, they can easily change the badge.

One could then possibly skip auto-generating the CI workflows and README badges if Other is selected, but I don't see any justification to break current functionality. Some users may want to use a personal git forge and then migrate to Github later, for example.

Another option would be to add a prompt like Other host selected. Still generate Github continuous integration template worflows? [ ]

[alametti]

This is in a way similar to #484