Support annotations on type aliases declarations

idea/testData/decompiler/decompiledText/TypeAliases.expected.kt

@@ -8,5 +8,5 @@ public final class TypeAliases public constructor() {
 
     public typealias B = (dependency.A) -> kotlin.Unit
 
-    private typealias Parametrized<E, F>  = kotlin.collections.Map<E, F>
+    @test.Ann private typealias Parametrized<E, F>  = kotlin.collections.Map<E, F>
 }

idea/testData/decompiler/decompiledText/TypeAliases/TypeAliases.kt

@@ -8,7 +8,7 @@ class Outer<E, F> {
     }
 }
 
-annotation class Ann
+annotation class Ann(val value: String)
 class TypeAliases {
 
     typealias B = (A) -> Unit
@@ -17,7 +17,6 @@ class TypeAliases {
         b.invoke(a)
     }
 
-    // TODO: annotations are unsupported yet
-    @Ann
+    @Ann("OK")
     private typealias Parametrized<E, F> = Map<E, F>
 }

idea/testData/decompiler/stubBuilder/TypeAliases/TypeAliases.kt

@@ -17,7 +17,6 @@ class TypeAliases {
         b.invoke(a)
     }
 
-    // TODO: annotations are unsupported yet
     @Ann
     private typealias Parametrized<E, F> = Map<E, F>
 }

idea/testData/decompiler/stubBuilder/TypeAliases/TypeAliases.txt

@@ -85,6 +85,13 @@ PsiJetFileStubImpl[package=test]
                 REFERENCE_EXPRESSION:[referencedName=Unit]
       TYPEALIAS:[fqName=test.TypeAliases.Parametrized, isTopLevel=false, name=Parametrized]
         MODIFIER_LIST:[private]
+          ANNOTATION_ENTRY:[hasValueArguments=false, shortName=Ann]
+            CONSTRUCTOR_CALLEE:
+              TYPE_REFERENCE:
+                USER_TYPE:
+                  USER_TYPE:
+                    REFERENCE_EXPRESSION:[referencedName=test]
+                  REFERENCE_EXPRESSION:[referencedName=Ann]
         TYPE_PARAMETER_LIST:
           TYPE_PARAMETER:[fqName=null, isInVariance=false, isOutVariance=false, name=E]
           TYPE_PARAMETER:[fqName=null, isInVariance=false, isOutVariance=false, name=F]