Move some script related part of frontend to separate module to avoid using kotlin-reflect.jar in frontend module

Main goal is get rid of kotlin-reflect.jar from modules what required for minimal compiler.jar which can compile Kotlin only to JS to make it smaller.

idea/src/META-INF/extensions/common.xml

@@ -43,5 +43,7 @@
                         interface="org.jetbrains.kotlin.idea.facet.KotlinVersionInfoProvider"/>
         <extensionPoint name="platformGradleDetector"
                         interface="org.jetbrains.kotlin.idea.inspections.gradle.KotlinPlatformGradleDetector"/>
+        <extensionPoint name="scriptHelper"
+                        interface="org.jetbrains.kotlin.script.ScriptHelper"/>
     </extensionPoints>
 </idea-plugin>

idea/src/META-INF/extensions/kotlin2jvm.xml

@@ -9,5 +9,7 @@
         <classBuilderInterceptorExtension implementation="org.jetbrains.kotlin.annotation.AnnotationCollectorExtension"/>
 
         <analyzeCompleteHandlerExtension implementation="org.jetbrains.kotlin.resolve.jvm.AnalyzeCompleteHandlerExtension"/>
+
+        <scriptHelper implementation="org.jetbrains.kotlin.script.ScriptHelperImpl"/>
     </extensions>
 </idea-plugin>

idea/src/META-INF/plugin.xml

@@ -251,7 +251,7 @@
                     serviceImplementation="org.jetbrains.kotlin.script.KotlinScriptDefinitionProvider"/>
 
     <projectService serviceInterface="org.jetbrains.kotlin.script.KotlinScriptExternalImportsProvider"
-                    serviceImplementation="org.jetbrains.kotlin.script.KotlinScriptExternalImportsProvider"/>
+                    serviceImplementation="org.jetbrains.kotlin.script.KotlinScriptExternalImportsProviderImpl"/>
 
     <projectService serviceInterface="org.jetbrains.kotlin.idea.core.script.KotlinScriptConfigurationManager"
                     serviceImplementation="org.jetbrains.kotlin.idea.core.script.KotlinScriptConfigurationManager"/>