Support basic light-classes basic with FIR for CLI

compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/FirRegularClass.kt

@@ -36,6 +36,8 @@ interface FirRegularClass : FirClass, @VisitedSupertype FirClassLikeDeclaration<
     }
 
     fun replaceSupertypes(newSupertypes: List<FirTypeRef>): FirRegularClass
+
+    fun setCallbackOnSupertypesComputed(callback: () -> Unit)
 }
 
 val FirRegularClass.classId get() = symbol.classId

compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/impl/FirClassImpl.kt

@@ -63,6 +63,8 @@ open class FirClassImpl(
     override fun replaceSupertypes(newSupertypes: List<FirTypeRef>): FirRegularClass {
         superTypeRefs.clear()
         superTypeRefs.addAll(newSupertypes)
+        callbackOnSupertypesComputed?.invoke()
+        callbackOnSupertypesComputed = null
         return this
     }
 
@@ -76,4 +78,10 @@ open class FirClassImpl(
         companionObject = declarations.asSequence().filterIsInstance<FirRegularClass>().firstOrNull { it.isCompanion }
         return result
     }
+
+    private var callbackOnSupertypesComputed: (() -> Unit)? = null
+
+    override fun setCallbackOnSupertypesComputed(callback: () -> Unit) {
+        callbackOnSupertypesComputed = callback
+    }
 }

compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/impl/FirEnumEntryImpl.kt

@@ -54,9 +54,17 @@ class FirEnumEntryImpl(
     override fun replaceSupertypes(newSupertypes: List<FirTypeRef>): FirRegularClass {
         superTypeRefs.clear()
         superTypeRefs.addAll(newSupertypes)
+        callbackOnSupertypesComputed?.invoke()
+        callbackOnSupertypesComputed = null
         return this
     }
 
+    private var callbackOnSupertypesComputed: (() -> Unit)? = null
+
+    override fun setCallbackOnSupertypesComputed(callback: () -> Unit) {
+        callbackOnSupertypesComputed = callback
+    }
+
     override fun replaceTypeRef(newTypeRef: FirTypeRef) {
         typeRef = newTypeRef
     }
@@ -85,4 +93,4 @@ class FirEnumEntryImpl(
 
         return this
     }
-}
+}