[cls] include annotation arguments in cls stubs

^ KTIJ-24666
this would allow to build fir based on stubs,
do not keep ProtoBuf in memory and
search in decompiled code by stubs

core/deserialization.common/src/org/jetbrains/kotlin/serialization/deserialization/AnnotationLoader.kt

@@ -60,4 +60,6 @@ interface AnnotationLoader<out A : Any> {
         proto: ProtoBuf.TypeParameter,
         nameResolver: NameResolver
     ): List<A>
+
+    fun loadAnnotation(proto: ProtoBuf.Annotation, nameResolver: NameResolver): A
 }