FIR UAST: convert (light) class for facade

plugins/uast-kotlin-fir/testData/declaration/facade.log.fir.txt

@@ -1 +1,7 @@
 UFile (package = declaration)
+    UClass (name = Utils)
+        UMethod (name = foo)
+            [!] FirUnknownKotlinExpression (INTEGER_CONSTANT)
+        UMethod (name = buzz)
+            UParameter (name = $this$buzz)
+            [!] FirUnknownKotlinExpression (BLOCK)

plugins/uast-kotlin-fir/testData/declaration/facade.render.fir.txt

@@ -1,2 +1,6 @@
 package declaration
 
+public final class Utils {
+    public static final fun foo() : int = [!] FirUnknownKotlinExpression (INTEGER_CONSTANT)
+    public static final fun buzz($this$buzz: java.lang.String) : java.lang.String = [!] FirUnknownKotlinExpression (BLOCK)
+}

plugins/uast-kotlin-fir/testData/declaration/objects.log.fir.txt

@@ -1,6 +1,12 @@
 UFile (package = )
     UImportStatement (isOnDemand = false)
     UImportStatement (isOnDemand = false)
+    UClass (name = ObjectsKt)
+        UField (name = topRunnable)
+            [!] FirUnknownKotlinExpression (OBJECT_LITERAL)
+        UMethod (name = getTopRunnable)
+        UMethod (name = main)
+            [!] FirUnknownKotlinExpression (BLOCK)
     UClass (name = RunnableManager)
         UField (name = INSTANCE)
         UField (name = tasks)

plugins/uast-kotlin-fir/testData/declaration/objects.render.fir.txt

@@ -1,6 +1,12 @@
 import java.lang.Runnable
 import java.lang.Thread
 
+public final class ObjectsKt {
+    private static final var topRunnable: java.lang.Runnable = [!] FirUnknownKotlinExpression (OBJECT_LITERAL)
+    public static final fun getTopRunnable() : java.lang.Runnable = UastEmptyExpression
+    public static final fun main() : void = [!] FirUnknownKotlinExpression (BLOCK)
+}
+
 public final class RunnableManager {
     public static final var INSTANCE: RunnableManager
     private final var tasks: java.util.List<java.lang.Runnable> = [!] FirUnknownKotlinExpression (CALL_EXPRESSION)