FIR: Implement lookup tracking

compiler/fir/tree/src/org/jetbrains/kotlin/fir/scopes/FirCompositeScope.kt

@@ -52,4 +52,8 @@ class FirCompositeScope(val scopes: Iterable<FirScope>) : FirScope(), FirContain
     override fun getClassifierNames(): Set<Name> {
         return scopes.flatMapTo(hashSetOf()) { it.getContainingClassifierNamesIfPresent() }
     }
+
+    override val scopeOwnerLookupNames: List<String> by lazy(LazyThreadSafetyMode.PUBLICATION) {
+        scopes.flatMap { it.scopeOwnerLookupNames }
+    }
 }

compiler/fir/tree/src/org/jetbrains/kotlin/fir/scopes/FirScope.kt

@@ -34,6 +34,8 @@ abstract class FirScope {
     }
 
     open fun mayContainName(name: Name) = true
+
+    open val scopeOwnerLookupNames: List<String> get() = emptyList()
 }
 
 fun FirScope.getSingleClassifier(name: Name): FirClassifierSymbol<*>? = mutableListOf<FirClassifierSymbol<*>>().apply {