[FIR] Add special node for implicit invoke calls

compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/BuilderConfigurator.kt

@@ -65,6 +65,12 @@ object BuilderConfigurator : AbstractBuilderConfigurator<FirTreeBuilder>(FirTree
             fields from constructor without listOf("isPrimary", "attributes")
         }
 
+        val abstractFunctionCallBuilder by builder {
+            parents += qualifiedAccessBuilder
+            parents += callBuilder
+            fields from functionCall
+        }
+
         for (constructorType in listOf("FirPrimaryConstructor", "FirConstructorImpl")) {
             builder(constructor, constructorType) {
                 parents += abstractConstructorBuilder
@@ -148,9 +154,8 @@ object BuilderConfigurator : AbstractBuilderConfigurator<FirTreeBuilder>(FirTree
             useTypes(emptyArgumentListType)
         }
 
-        builder(functionCall) {
-            parents += qualifiedAccessBuilder
-            parents += callBuilder
+        val configurationForFunctionCallBuilder: LeafBuilderConfigurationContext.() -> Unit = {
+            parents += abstractFunctionCallBuilder
             defaultNoReceivers()
             openBuilder()
             default("argumentList") {
@@ -159,6 +164,9 @@ object BuilderConfigurator : AbstractBuilderConfigurator<FirTreeBuilder>(FirTree
             useTypes(emptyArgumentListType)
         }
 
+        builder(functionCall, init = configurationForFunctionCallBuilder)
+        builder(implicitInvokeCall, init = configurationForFunctionCallBuilder)
+
         builder(qualifiedAccessExpression) {
             parents += qualifiedAccessBuilder
             defaultNoReceivers()

compiler/fir/tree/tree-generator/src/org/jetbrains/kotlin/fir/tree/generator/FirTreeBuilder.kt

@@ -102,6 +102,7 @@ object FirTreeBuilder : AbstractFirTreeBuilder() {
     val errorProperty = element("ErrorProperty", Declaration, variable, diagnosticHolder, typeParametersOwner)
     val qualifiedAccessExpression = element("QualifiedAccessExpression", Expression, expression, qualifiedAccess)
     val functionCall = element("FunctionCall", Expression, qualifiedAccessExpression, call)
+    val implicitInvokeCall = element("ImplicitInvokeCall", Expression, functionCall)
     val delegatedConstructorCall = element("DelegatedConstructorCall", Expression, resolvable, call)
     val componentCall = element("ComponentCall", Expression, functionCall)
     val callableReferenceAccess = element("CallableReferenceAccess", Expression, qualifiedAccessExpression)