prep migrating buildSrc plugins to includeBuild plugins

gradle-plugins/settings-plugins/settings.gradle.kts

@@ -0,0 +1,25 @@
+rootProject.name = "settings-plugins"
+
+
+@Suppress("UnstableApiUsage") // Central declaration of repositories is an incubating feature
+dependencyResolutionManagement {
+  repositoriesMode.set(RepositoriesMode.PREFER_SETTINGS)
+
+  repositories {
+    mavenCentral()
+    gradlePluginPortal()
+  }
+
+  pluginManagement {
+    repositories {
+      gradlePluginPortal()
+      mavenCentral()
+    }
+  }
+
+  versionCatalogs {
+    create("libs") {
+      from(files("../../gradle/libs.versions.toml"))
+    }
+  }
+}