[kotlinx-metadata-klib] Fix library reading

* To be able to deserialize metadata we need to include ":core:deserialization".
* Use per-fragment string tables.
* Read file names from strings instead of file names list.

libraries/kotlinx-metadata/klib/build.gradle.kts

@@ -31,6 +31,7 @@ dependencies {
     // TODO: Get rid of this heavyweight dependency.
     shadows(project(":core:descriptors"))
     shadows(project(":core:metadata"))
+    shadows(project(":core:deserialization"))
     shadows(project(":compiler:serialization"))
     shadows(project(":kotlin-util-klib-metadata"))
     shadows(project(":kotlin-util-klib"))

libraries/kotlinx-metadata/klib/src/kotlinx/metadata/klib/KlibModuleMetadata.kt

@@ -83,12 +83,13 @@ class KlibModuleMetadata(
             readStrategy: KlibModuleFragmentReadStrategy = KlibModuleFragmentReadStrategy.DEFAULT
         ): KlibModuleMetadata {
             val moduleHeaderProto = parseModuleHeader(library.moduleHeaderData)
-            val nameResolver = NameResolverImpl(moduleHeaderProto.strings, moduleHeaderProto.qualifiedNames)
-            val moduleHeader = moduleHeaderProto.readHeader(nameResolver)
+            val headerNameResolver = NameResolverImpl(moduleHeaderProto.strings, moduleHeaderProto.qualifiedNames)
+            val moduleHeader = moduleHeaderProto.readHeader(headerNameResolver)
             val fileIndex = SourceFileIndexReadExtension(moduleHeader.file)
             val moduleFragments = moduleHeader.packageFragmentName.flatMap { packageFqName ->
                 library.packageMetadataParts(packageFqName).map { part ->
                     val packageFragment = parsePackageFragment(library.packageMetadata(packageFqName, part))
+                    val nameResolver = NameResolverImpl(packageFragment.strings, packageFragment.qualifiedNames)
                     KmModuleFragment().apply { packageFragment.accept(this, nameResolver, listOf(fileIndex)) }
                 }.let(readStrategy::processModuleParts)
             }

libraries/kotlinx-metadata/klib/src/kotlinx/metadata/klib/impl/klibMetadataExtensions.kt

@@ -20,10 +20,10 @@ import org.jetbrains.kotlin.serialization.StringTableImpl
 internal class KlibMetadataExtensions : MetadataExtensions {
 
     private fun ReadContext.getSourceFile(index: Int) =
-        contextExtensions.filterIsInstance<SourceFileIndexReadExtension>().first().getSourceFile(index)
+        strings.getString(index).let(::KlibSourceFile)
 
     private fun WriteContext.getIndexOf(file: KlibSourceFile) =
-        contextExtensions.filterIsInstance<ReverseSourceFileIndexWriteExtension>().first().getIndexOf(file)
+        strings.getStringIndex(file.name)
 
     override fun readClassExtensions(v: KmClassVisitor, proto: ProtoBuf.Class, c: ReadContext) {
         val extension = v.visitExtensions(KlibClassExtensionVisitor.TYPE) as? KlibClassExtensionVisitor ?: return