Rework DescriptorSerializerPlugin to be a part of Project's extensions

instead of statically registering it.

Static registering can cause subtle errors when plugin implementation
(e.g. SerializationDescriptorPluginForKotlinxSerialization) is registered
from multiple classloaders: in multi-module with daemon compilation scenario

 #KT-41857 Fixed

compiler/tests-common/tests/org/jetbrains/kotlin/test/KlibTestUtil.kt

@@ -72,7 +72,8 @@ object KlibTestUtil {
         val serializer = KlibMetadataMonolithicSerializer(
             languageVersionSettings = LanguageVersionSettingsImpl.DEFAULT,
             metadataVersion = KlibMetadataVersion.INSTANCE,
-            skipExpects = false
+            skipExpects = false,
+            project = null
         )
 
         val serializedMetadata = serializer.serializeModule(module)