assets/scully-routes.json not found when using baseHref option

[rpd10]

🐞 Bug report

Description

When deploying to GitHub Pages, I need to pass --base-href /my-project-name/ in order to set the <base> tag used for loading static assets in Angular. I cannot find a way to configure Scully with the same base. When loading the published page, Scully makes a request to https://.github.io/assets/scully-routes.json - instead it needs to request https://.github.io//assets/scully-routes.json

I would be willing to submit a PR for this. My initial thought is that ScullyRoutesService should optionally inject APP_BASE_HREF and if provided, use that value when fetching the scully-routes.json

🔬 Minimal Reproduction

https://github.com/rpd10/diehl-with-software/tree/live

💻Your Environment

Angular Version:

Angular CLI: 9.1.0
Node: 12.18.1
OS: darwin x64

Angular: 9.1.11
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router
Ivy Workspace: Yes

Scully Version:

"@scullyio/init": "0.0.28",
    "@scullyio/ng-lib": "0.0.24",
    "@scullyio/scully": "0.0.98",

🔥 Exception or Error

[SanderElias]

@rpd10 Have you tried using the Scully base-href-rewrite plugin?

[SanderElias]

@rpd10 Sorry, it seems there was a regression. I removed the starting / (in the above PR) to the Scully lib again.
That means it will use the base-href to find the file, solving this issue.

[rpd10]

Thanks, I noted the leading / yesterday when reading through the Angular docs. I'll look forward to the next release.