Fix some GitLab URL issues

[christopher-dG]

Closes #156
Closes #155

Thanks for the reports @judober! Always good to get feedback on the less-frequently used parts like GitLab support. Could you test this out and confirm that it does what you expect! (you can use ] add PkgTemplates#cdg/gitlab-urls to get this branch with Pkg)

[codecov]

Codecov Report

Merging #157 into master will decrease coverage by 1.61%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #157      +/-   ##
==========================================
- Coverage   91.98%   90.36%   -1.62%     
==========================================
  Files          17       17              
  Lines         337      353      +16     
==========================================
+ Hits          310      319       +9     
- Misses         27       34       +7     

Impacted Files	Coverage Δ
src/plugins/ci.jl	80.88% <ø> (-10.79%)	⬇️
src/plugins/documenter.jl	80.55% <ø> (-4.30%)	⬇️
src/plugins/develop.jl	66.66% <0.00%> (-33.34%)	⬇️
src/plugins/tests.jl	94.11% <0.00%> (-5.89%)	⬇️
src/template.jl	100.00% <0.00%> (ø)
src/plugins/git.jl	93.33% <0.00%> (+4.69%)	⬆️
src/plugin.jl	94.44% <0.00%> (+5.55%)	⬆️
src/plugins/project_file.jl	87.50% <0.00%> (+12.50%)	⬆️

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[judober]

Well, I cannot use it as before because interactive_template() apparently has changed.
I now get:

ERROR: ArgumentError: Git: Git hosting service username is required, set one with keyword `user="<username>"`

Trying t = interactive_template(user="name") results in

ERROR: MethodError: no method matching interactive_template(; user="name")

As interactive_template is apparently deprecated, I also tried the suggested t = Template(; interactive = true, user="name") which gives me:

┌ Warning: Unrecognized keywords were supplied, see the documentation for help
│   kwargs =
│    Dict{Symbol,Any} with 1 entry:
│      :interactive => true
└ @ PkgTemplates ~/.julia/packages/PkgTemplates/zz7bJ/src/template.jl:100

[christopher-dG]

Oh right, I just kind of assume people use master branch now. Oops! Can you use the Template(...) constructor instead?

[judober]

Ok, it it fixed thanks!

I'm just wondering if I can get the pages for the documentation to work too...
I think the path there is also specific for gitlab.io but I'm not sure what would be the correct version.

Btw: I got this during compilation of PkgTemplates:

WARNING: using PkgTemplates.Documenter in module Main conflicts with an existing identifier.

[christopher-dG]

Yeah there's a TODO to deal with custom GitLab Pages URLs, but because the URL can technically be anything I think we'd have to add a new field to Documenter which feels clunky right now, so I'm gonna wait and think about it some more.

And I've realized that currently the Documenter plugin and Documenter package can't coexist in the same Julia session, but I don't think I see that as too much of a problem because the situation where as user creates a new package and builds documentation in the same session seems pretty rare. If I get a bunch of user complaints about it then I'd probably change it to Docs.