Prepare infrastruct for fixing customized script resolving

Move ConfigManager and ClassFinder to the idea-analysis
 Add (back) IndexableSetContributor
 Add a method in ConfigManager to generate all dependencies scope
 Add and use delegating scope with possibility to get base scope from it (used in the class finder)

idea/src/META-INF/plugin.xml

@@ -291,6 +291,8 @@
     <projectService serviceInterface="org.jetbrains.kotlin.console.KotlinConsoleKeeper"
                     serviceImplementation="org.jetbrains.kotlin.console.KotlinConsoleKeeper"/>
 
+    <indexedRootsProvider implementation="org.jetbrains.kotlin.idea.script.KotlinScriptDependenciesIndexableSetContributor"/>
+
     <errorHandler implementation="org.jetbrains.kotlin.idea.reporter.KotlinReportSubmitter"/>
 
     <internalFileTemplate name="Kotlin File"/>