Allow user-supplied plugin resolution rewriting rules

[grodin]

This isn't quite a bug report but could be a feature request.

I have a settings.gradle.kts looking like this:

pluginManagement {
    resolutionStrategy {
        val pluginIdToCoordinates = mapOf(
            "com.google.gms.google-services" to "com.google.gms:google-services"
        )
        eachPlugin {
            pluginIdToCoordinates[requested.id.id]?.also { useModule(it) }
        }
    }
    repositories {
        gradlePluginPortal()
        google()
    }
}
buildscript {
    repositories {
        gradlePluginPortal()
    }
    dependencies {
        classpath("de.fayard.refreshVersions:refreshVersions:0.9.7")
    }
}

bootstrapRefreshVersions()

which enables applying the Google services Gradle plugin from a plugins block, e.g.:

plugins {
         id("com.google.gms.google-services").apply(false).version("4.3.3")
}

to workaround the fact that Google refuses to correctly publish their Gradle plugins.

Unfortunately, this requires me to request a version, negating the use of refreshVersions for only the Google services plugin.

Digging into the bootstrapRefreshVersionsCore() function and then into setupRefreshVersions() I can see some special casing for the Android plugins which achieves the same thing as what I've done in pluginManagement above.

I'd like to request some mechanism whereby a similar thing to the Android special casing could be done when calling bootstrapRefreshVersions, or else some suggestion to solve the problem I'm having. I know I can workaround it by just declaring a buildscript dependency, and that's what I will probably do, but it's slightly annoying that I can't get this one plugin to work with refreshVersions!

The root problem is, as I said, Google seems to not be interested in publishing plugin marker artifacts, even on their own repository, and it's quite stupid that we all have to work around it, but I suppose that's what Google does!

Thanks for the work on this plugin, BTW. It's the best solution for managing versions I've seen yet, and is really useful.