[JVM] Lower .entries calls on Kotlin enums

Leveraging the same mechanism with $EntriesMapping as Java enums.
Old (compiled with LV/AV < 1.8) enums are detected by looking for
static special <get-entries> method that cannot be introduced on
Kotlin enums otherwise

#KT-53236

compiler/testData/codegen/bytecodeText/enum/enumEntries.kt

@@ -10,3 +10,4 @@ enum class MyEnum {
 // 1 private final static synthetic Lkotlin/enums/EnumEntries; \$ENTRIES
 // 1 public final static getEntries\(\)Lkotlin/enums/EnumEntries;
 // 0 [^\$]entries
+// 0 class [a-zA-Z]+\$EntriesMappings