[IR] Introduce new IdSignatures

FileSignature, CompositeSignature, LocalSignature

They are needed to make possible reference any non-local declaration via
 signature, including private signature, type parameters and so on.

- Support those new signatures in proto and klibs
- Rename `isPublic` -> `isPubliclyVisible` due to changed semantic
- Fix FIR
- clean up code

generators/interpreter/GenerateInterpreterMap.kt

@@ -16,6 +16,7 @@ import org.jetbrains.kotlin.descriptors.impl.ModuleDescriptorImpl
 import org.jetbrains.kotlin.generators.util.GeneratorsFileUtil
 import org.jetbrains.kotlin.ir.declarations.impl.IrFactoryImpl
 import org.jetbrains.kotlin.ir.descriptors.IrBuiltIns
+import org.jetbrains.kotlin.ir.symbols.IrFileSymbol
 import org.jetbrains.kotlin.ir.types.impl.originalKotlinType
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.name.Name
@@ -264,6 +265,10 @@ private fun getIrBuiltIns(): IrBuiltIns {
         override fun composeSignature(descriptor: DeclarationDescriptor): IdSignature? = null
 
         override fun composeEnumEntrySignature(descriptor: ClassDescriptor): IdSignature? = null
+
+        override fun composeAnonInitSignature(descriptor: ClassDescriptor): IdSignature? = null
+
+        override fun composeFieldSignature(descriptor: PropertyDescriptor): IdSignature? = null
     }
     val symbolTable = SymbolTable(signaturer, IrFactoryImpl)
     val typeTranslator = TypeTranslatorImpl(symbolTable, languageSettings, moduleDescriptor)