[K2] Add Fir2IrConfiguration class to store configuration parameters

One example of such parameter is `linkViaSignatures`. There is
`Psi2IrConfiguration` as an analog for K1.

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

@@ -33,6 +33,7 @@ import org.jetbrains.kotlin.config.languageVersionSettings
 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.FirJvmBackendClassResolver
 import org.jetbrains.kotlin.fir.backend.jvm.FirJvmBackendExtension
 import org.jetbrains.kotlin.fir.backend.jvm.FirJvmKotlinMangler
@@ -122,16 +123,16 @@ object GenerationUtils {
         val firAnalyzerFacade = FirAnalyzerFacade(
             session,
             configuration.languageVersionSettings,
+            Fir2IrConfiguration(linkViaSignatures = false),
             files,
             emptyList(),
             IrGenerationExtension.getInstances(project),
             FirParser.Psi,
-            generateSignatures = false
         )
         val fir2IrExtensions = JvmFir2IrExtensions(configuration, JvmIrDeserializerImpl(), JvmIrMangler)
 
         val commonMemberStorage = Fir2IrCommonMemberStorage(
-            generateSignatures = firAnalyzerFacade.generateSignatures,
+            generateSignatures = firAnalyzerFacade.fir2IrConfiguration.linkViaSignatures,
             signatureComposerCreator = { JvmIdSignatureDescriptor(JvmDescriptorMangler(null)) },
             manglerCreator = { FirJvmKotlinMangler() }
         )

compiler/tests-compiler-utils/tests/org/jetbrains/kotlin/fir/FirAnalyzerFacade.kt

@@ -43,12 +43,12 @@ abstract class AbstractFirAnalyzerFacade {
 class FirAnalyzerFacade(
     val session: FirSession,
     val languageVersionSettings: LanguageVersionSettings,
+    val fir2IrConfiguration: Fir2IrConfiguration,
     val ktFiles: Collection<KtFile> = emptyList(), // may be empty if light tree mode enabled
     val lightTreeFiles: Collection<LightTreeFile> = emptyList(), // may be empty if light tree mode disabled
     val irGeneratorExtensions: Collection<IrGenerationExtension>,
     val parser: FirParser,
     val enablePluginPhases: Boolean = false,
-    val generateSignatures: Boolean = false
 ) : AbstractFirAnalyzerFacade() {
     private var firFiles: List<FirFile>? = null
     private var _scopeSession: ScopeSession? = null
@@ -116,11 +116,11 @@ class FirAnalyzerFacade(
             session, _scopeSession!!, firFiles!!,
             languageVersionSettings,
             fir2IrExtensions,
+            fir2IrConfiguration,
             JvmIrMangler, IrFactoryImpl,
             FirJvmVisibilityConverter,
             Fir2IrJvmSpecialAnnotationSymbolProvider(),
             irGeneratorExtensions,
-            generateSignatures,
             kotlinBuiltIns = DefaultBuiltIns.Instance, // TODO: consider passing externally,
             commonMemberStorage = commonMemberStorage,
             initializedIrBuiltIns = irBuiltIns