[FIR] introduce FirFileAnnotationsContainer

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

@@ -30,6 +30,7 @@ object FirTreeBuilder : AbstractFirTreeBuilder() {
     val contextReceiver by element(Declaration)
 
     val elementWithResolvePhase by element(Other)
+    val fileAnnotationsContainer by element(Other, elementWithResolvePhase, annotationContainer)
     val declaration by sealedElement(Declaration, elementWithResolvePhase, annotationContainer)
     val typeParameterRefsOwner by sealedElement(Declaration)
     val typeParametersOwner by sealedElement(Declaration, typeParameterRefsOwner)

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

@@ -83,6 +83,10 @@ object NodeConfigurator : AbstractFieldConfigurator<FirTreeBuilder>(FirTreeBuild
             shouldBeAbstractClass()
         }
 
+        fileAnnotationsContainer.configure {
+            +field("containingFileSymbol", type("fir.symbols.impl", "FirFileSymbol"), argument = null)
+        }
+
         declaration.configure {
             +symbolWithPackage("fir.symbols", "FirBasedSymbol", "out FirDeclaration")
             +field("moduleData", firModuleDataType)

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

@@ -113,6 +113,7 @@ fun SmartPrinter.printImplementation(implementation: Implementation) {
                         !element.type.contains("Reference")
                         && !element.type.contains("ResolvedQualifier")
                         && !element.type.endsWith("Ref")
+                        && !element.type.endsWith("AnnotationsContainer")
             }?.let { symbolFields ->
                 println("init {")
                 for (symbolField in symbolFields) {