[KLIB] Implement new linker based on IdSignature

- Remove klib dependency on metadata and uniqID
 - Refactored proto format to make it more effective and compact
  -- Use special encoding for some types of data (coordinates, flags, types)
  -- Remove symbols table
  -- Use packed proto list if it is possible
 - Remove extension from metadata
 - Remove special ids for function interfaces
 - Fix klib IO
 - Fix incremental cache
 - General code clean up

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrDeclarationStorage.kt

@@ -166,8 +166,9 @@ class Fir2IrDeclarationStorage(
             val descriptor = WrappedClassDescriptor()
             val origin = IrDeclarationOrigin.DEFINED
             val modality = regularClass?.modality ?: Modality.FINAL
+            val visibility = regularClass?.visibility ?: Visibilities.PUBLIC
             return klass.convertWithOffsets { startOffset, endOffset ->
-                irSymbolTable.declareClass(startOffset, endOffset, origin, descriptor, modality) { symbol ->
+                irSymbolTable.declareClass(startOffset, endOffset, origin, descriptor, modality, visibility) { symbol ->
                     IrClassImpl(
                         startOffset,
                         endOffset,

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/descriptors/FirPackageFragmentDescriptor.kt

@@ -30,7 +30,7 @@ class FirPackageFragmentDescriptor(override val fqName: FqName, val moduleDescri
     }
 
     override fun <R : Any?, D : Any?> accept(visitor: DeclarationDescriptorVisitor<R, D>?, data: D): R {
-        TODO("not implemented")
+        return visitor?.visitPackageFragmentDescriptor(this, data) as R
     }
 
     override fun getSource(): SourceElement {
@@ -38,7 +38,7 @@ class FirPackageFragmentDescriptor(override val fqName: FqName, val moduleDescri
     }
 
     override fun acceptVoid(visitor: DeclarationDescriptorVisitor<Void, Void>?) {
-        TODO("not implemented")
+        visitor?.visitPackageFragmentDescriptor(this, null)
     }
 
     override val annotations: Annotations

compiler/fir/fir2ir/tests/org/jetbrains/kotlin/fir/AbstractFir2IrTextTest.kt

@@ -12,7 +12,6 @@ import com.intellij.psi.search.GlobalSearchScope
 import junit.framework.TestCase
 import org.jetbrains.kotlin.asJava.finder.JavaElementFinder
 import org.jetbrains.kotlin.backend.common.serialization.signature.IdSignatureDescriptor
-import org.jetbrains.kotlin.backend.jvm.serialization.JvmManglerDesc
 import org.jetbrains.kotlin.cli.jvm.compiler.TopDownAnalyzerFacadeForJVM
 import org.jetbrains.kotlin.config.languageVersionSettings
 import org.jetbrains.kotlin.fir.backend.Fir2IrConverter
@@ -21,6 +20,7 @@ import org.jetbrains.kotlin.fir.resolve.firProvider
 import org.jetbrains.kotlin.fir.resolve.impl.FirProviderImpl
 import org.jetbrains.kotlin.fir.resolve.transformers.FirTotalResolveTransformer
 import org.jetbrains.kotlin.ir.AbstractIrTextTestCase
+import org.jetbrains.kotlin.ir.backend.jvm.serialization.JvmManglerDesc
 import org.jetbrains.kotlin.ir.declarations.IrModuleFragment
 import java.io.File