[FIR] Add FirExtensionRegistrarAdapter to fix extension points in FE 1.0 IDE plugin

FirExtensionRegistrar is FIR specific extension which requires FIR
  classes to work, which are missing in dependencies of FE 1.0 IDE plugin.
  To fix this issue FirExtensionRegistrarAdapter is introduced. This
  class is a base class for FirExtensionRegistrar and it does not have
  any FIR specific classes in it's API, so it can be safely registered
  in IDE

compiler/cli/cli-common/resources/META-INF/extensions/compiler.xml

@@ -66,8 +66,8 @@
         <extensionPoint qualifiedName="org.jetbrains.kotlin.renameHandler"
                         interface="com.intellij.refactoring.rename.RenameHandler"
                         dynamic="true"/>
-        <extensionPoint qualifiedName="org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrar"
-                        interface="org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrar"/>
+        <extensionPoint qualifiedName="org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrarAdapter"
+                        interface="org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrarAdapter"/>
         <extensionPoint qualifiedName="org.jetbrains.kotlin.DescriptorSerializerPlugin"
                         interface="org.jetbrains.kotlin.serialization.DescriptorSerializerPlugin"/>
         <extensionPoint qualifiedName="org.jetbrains.kotlin.defaultErrorMessages"

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/compiler/KotlinCoreEnvironment.kt

@@ -82,7 +82,7 @@ import org.jetbrains.kotlin.config.*
 import org.jetbrains.kotlin.extensions.*
 import org.jetbrains.kotlin.extensions.internal.CandidateInterceptor
 import org.jetbrains.kotlin.extensions.internal.TypeResolutionInterceptor
-import org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrar
+import org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrarAdapter
 import org.jetbrains.kotlin.idea.KotlinFileType
 import org.jetbrains.kotlin.js.translate.extensions.JsSyntheticTranslateExtension
 import org.jetbrains.kotlin.load.kotlin.KotlinBinaryClassCache
@@ -649,7 +649,7 @@ class KotlinCoreEnvironment private constructor(
             TypeResolutionInterceptor.registerExtensionPoint(project)
             CandidateInterceptor.registerExtensionPoint(project)
             DescriptorSerializerPlugin.registerExtensionPoint(project)
-            FirExtensionRegistrar.registerExtensionPoint(project)
+            FirExtensionRegistrarAdapter.registerExtensionPoint(project)
         }
 
         internal fun registerExtensionsFromPlugins(project: MockProject, configuration: CompilerConfiguration) {