Generate annotations on enum entry constants in bytecode

#KT-5665 Fixed

compiler/testData/codegen/boxWithStdlib/annotations/annotatedEnumEntry.kt

@@ -0,0 +1,33 @@
+// KT-5665
+
+import java.lang.annotation.*
+
+Retention(RetentionPolicy.RUNTIME)
+annotation class First
+
+Retention(RetentionPolicy.RUNTIME)
+annotation class Second(val value: String)
+
+enum class E {
+    [First]
+    E1 {
+        fun foo() = "something"
+    }
+
+    [Second("OK")]
+    E2
+}
+
+fun box(): String {
+    val e = javaClass<E>()
+
+    val e1 = e.getDeclaredField(E.E1.toString()).getAnnotations()
+    if (e1.size != 1) return "Fail E1 size: ${e1.toList()}"
+    if (e1[0].annotationType() != javaClass<First>()) return "Fail E1: ${e1.toList()}"
+
+    val e2 = e.getDeclaredField(E.E2.toString()).getAnnotations()
+    if (e2.size != 1) return "Fail E2 size: ${e2.toList()}"
+    if (e2[0].annotationType() != javaClass<Second>()) return "Fail E2: ${e2.toList()}"
+
+    return (e2[0] as Second).value
+}