[FIR2IR] Make convertAndActualize method the only entrypoint to fir2ir

Fir2Ir conversion consists of multiple steps with complex logic (like
  conversion of each module, actualization, plugins application, constant
  evaluation), and to ensure that they all are executed correctly it's
  convenient to have the single entry point for all this machinery

compiler/tests-compiler-utils/tests/org/jetbrains/kotlin/codegen/GenerationUtils.kt

@@ -15,8 +15,6 @@ import org.jetbrains.kotlin.analyzer.AnalysisResult
 import org.jetbrains.kotlin.asJava.finder.JavaElementFinder
 import org.jetbrains.kotlin.backend.jvm.JvmIrCodegenFactory
 import org.jetbrains.kotlin.backend.jvm.JvmIrDeserializerImpl
-import org.jetbrains.kotlin.backend.jvm.JvmIrTypeSystemContext
-import org.jetbrains.kotlin.builtins.DefaultBuiltIns
 import org.jetbrains.kotlin.cli.common.CLIConfigurationKeys
 import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity
 import org.jetbrains.kotlin.cli.common.messages.GroupingMessageCollector
@@ -25,19 +23,17 @@ import org.jetbrains.kotlin.cli.common.output.writeAllTo
 import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment
 import org.jetbrains.kotlin.cli.jvm.compiler.NoScopeRecordCliBindingTrace
 import org.jetbrains.kotlin.cli.jvm.compiler.TopDownAnalyzerFacadeForJVM
+import org.jetbrains.kotlin.cli.jvm.compiler.pipeline.convertToIrAndActualizeForJvm
 import org.jetbrains.kotlin.codegen.state.GenerationState
 import org.jetbrains.kotlin.config.CommonConfigurationKeys
 import org.jetbrains.kotlin.config.CompilerConfiguration
 import org.jetbrains.kotlin.config.JVMConfigurationKeys
-import org.jetbrains.kotlin.config.languageVersionSettings
-import org.jetbrains.kotlin.constant.EvaluatedConstTracker
 import org.jetbrains.kotlin.diagnostics.DiagnosticReporterFactory
 import org.jetbrains.kotlin.fir.FirAnalyzerFacade
 import org.jetbrains.kotlin.fir.FirTestSessionFactoryHelper
-import org.jetbrains.kotlin.fir.backend.Fir2IrCommonMemberStorage
-import org.jetbrains.kotlin.fir.backend.Fir2IrConfiguration
-import org.jetbrains.kotlin.fir.backend.jvm.*
-import org.jetbrains.kotlin.fir.pipeline.signatureComposerForJvmFir2Ir
+import org.jetbrains.kotlin.fir.backend.jvm.FirJvmBackendClassResolver
+import org.jetbrains.kotlin.fir.backend.jvm.FirJvmBackendExtension
+import org.jetbrains.kotlin.fir.backend.jvm.JvmFir2IrExtensions
 import org.jetbrains.kotlin.ir.backend.jvm.jvmResolveLibraries
 import org.jetbrains.kotlin.ir.backend.jvm.serialization.JvmIrMangler
 import org.jetbrains.kotlin.load.kotlin.PackagePartProvider
@@ -118,7 +114,6 @@ object GenerationUtils {
             getPackagePartProvider = packagePartProvider
         )
 
-        val linkViaSignatures = configuration.getBoolean(JVMConfigurationKeys.LINK_VIA_SIGNATURES)
         // TODO: add running checkers and check that it's safe to compile
         val firAnalyzerFacade = FirAnalyzerFacade(
             session,
@@ -129,32 +124,14 @@ object GenerationUtils {
 
         val fir2IrExtensions = JvmFir2IrExtensions(configuration, JvmIrDeserializerImpl(), JvmIrMangler)
         val diagnosticReporter = DiagnosticReporterFactory.createReporter()
-
-        val fir2IrConfiguration = Fir2IrConfiguration(
-            languageVersionSettings = configuration.languageVersionSettings,
-            diagnosticReporter = diagnosticReporter,
-            linkViaSignatures = linkViaSignatures,
-            evaluatedConstTracker = configuration
-                .putIfAbsent(CommonConfigurationKeys.EVALUATED_CONST_TRACKER, EvaluatedConstTracker.create()),
-            inlineConstTracker = configuration[CommonConfigurationKeys.INLINE_CONST_TRACKER],
-            expectActualTracker = configuration[CommonConfigurationKeys.EXPECT_ACTUAL_TRACKER],
-            allowNonCachedDeclarations = false,
-            useIrFakeOverrideBuilder = configuration.getBoolean(CommonConfigurationKeys.USE_IR_FAKE_OVERRIDE_BUILDER),
-        )
-
-        val commonMemberStorage = Fir2IrCommonMemberStorage(signatureComposerForJvmFir2Ir(linkViaSignatures), FirJvmKotlinMangler())
-
         firAnalyzerFacade.runResolution()
-        val (moduleFragment, components, pluginContext) = firAnalyzerFacade.result.outputs.single().convertToIr(
+        val (moduleFragment, components, pluginContext) = firAnalyzerFacade.result.convertToIrAndActualizeForJvm(
             fir2IrExtensions,
-            fir2IrConfiguration,
-            commonMemberStorage,
-            irBuiltIns = null,
-            JvmIrMangler,
-            FirJvmVisibilityConverter,
-            DefaultBuiltIns.Instance,
-            ::JvmIrTypeSystemContext
+            configuration,
+            diagnosticReporter,
+            irGeneratorExtensions = emptyList()
         )
+
         val dummyBindingContext = NoScopeRecordCliBindingTrace().bindingContext
 
         val codegenFactory = JvmIrCodegenFactory(